To my knowledge, the max number of items you can get back from bartering is three, or at least the same items I am trying to barter here give back 3 vials. Yet, with more than 3 spots open in my inventory, I get a message that I don't have enough room

Rocky Cliffs |98%hp 100%m 75%mv 5713tnl 6 AM| w whe The Cave of Webs A water skin made of tooled leather and steel lies here. A small wooden cudgel lies here. (Glowing) A small silver object glitters in the dust. ( 2) A silver bracelet engraved with hyenas lies here. A cloak of Nightwing. A tin flask lies here, engraving visible on its side. A piece of leather lies here, almost scorched to bits. ( 2) Some waterweeds lie here. ( 5) A rolled scroll with yellowed edges is here. (Glowing) A red-tinted golden blade lies gleaming here on the ground. A tarnished silver ring has been left here, covered with bile. ( 2) Some leather sleeves have been left here. A woman dressed in a silky robe works steadily at a wooden loom. |98%hp 100%m 74%mv 5713tnl 6 AM| inv Alas, you cannot go that way. |98%hp 100%m 74%mv 5713tnl 6 AM| People near you: (PK) Migrulos The Cave of Webs Nrichi Silverwood |98%hp 100%m 74%mv 5713tnl 6 AM| You are carrying: (Glowing) a shirt of shining silver chain a wyvern scale shirt a cloak of wyvern leather (Glowing) (Humming) the amulet of control a belt of hardened raindrops a charred leather bracer an elegant silver rapier a Hell-Blade a captain's hat a green potion (Glowing) a potion of return (Humming) a spider-hilted steel sword (Glowing) (Humming) a blazing sword named 'Incinerator' a black iron broadsword the girdle of endless space a black, hooded silk cloak |98%hp 100%m 74%mv 5713tnl 6 AM| Nrichi has arrived. |98%hp 100%m 74%mv 5713tnl 6 AM| barter shirt for vial Egwetha the Weaver tells you 'I was going to offer multiple items, but you can't carry it all. Take a moment to make room.' |98%hp 100%m 74%mv 5713tnl 6 AM| Egwetha the Weaver nods at Nrichi with approval. Nrichi hands an elaborate beaded onyx belt to Egwetha the Weaver. Egwetha the Weaver hands a small vial of diluted venom to Nrichi. |98%hp 100%m 74%mv 5713tnl 6 AM| whoi nri <19 Duerg War> Nrichi the Armsman |98%hp 100%m 74%mv 5713tnl 6 AM| inv You are carrying: (Glowing) a shirt of shining silver chain a wyvern scale shirt a cloak of wyvern leather (Glowing) (Humming) the amulet of control a belt of hardened raindrops a charred leather bracer an elegant silver rapier a Hell-Blade a captain's hat a green potion (Glowing) a potion of return (Humming) a spider-hilted steel sword (Glowing) (Humming) a blazing sword named 'Incinerator' a black iron broadsword the girdle of endless space a black, hooded silk cloak |98%hp 100%m 74%mv 5713tnl 6 AM| Nrichi quaffs a small vial of diluted venom. |98%hp 100%m 74%mv 5713tnl 6 AM| sc Migrulos the Vanguard ------------------------------------------------------------------------------- Level : 26 Sex : male Race : minotaur Ethos : Orderly Align : Evil Class : warrior Practices: 4 Trains : 0 Hometown : Seantryn Modan Exp : 173687 To Level : 5713 Sphere : Strength Age : young, 24 years old (32 hours) Hit Point: 98 % Mana : 100% Move : 74 % Str : 23(23) Int : 16(16) Wis : 22(22) Dex : 19(19) Con : 21(21) Chr : 10(7 ) Carry # : 32/36 Weight : 460 lb 5 oz (Max 465 lbs) Gold : 7 Silver : 28 Copper : 140 Wimpy : 0 % Morale : Moderate Position : Standing Hitroll : 20 Damroll : 35 AC pierce : -87 Superbly armored AC bash : -71 Heavily armored AC slash : -99 Superbly armored AC magic : 4 Armored AC element: -65 Heavily armored vs Spell : Well protected vs Paralysis: Not protected vs Breath: Barely protected vs Mental: Not protected You are not hungry. You have 0 weapon specializations. You are specialized in sword. You are affected by: Skill: 'warcry' modifies save vs spell by -6 for 24 hours. Skill: 'warcry' modifies hit roll by 3 for 24 hours. Spell: 'detect invis' for 22 hours. ------------------------------------------------------------------------------- |98%hp 100%m 74%mv 5713tnl 6 AM| Nrichi gets a flame blade. |98%hp 100%m 74%mv 5713tnl 6 AM| put cloak space You put a cloak of wyvern leather in the girdle of endless space. |99%hp 100%m 79%mv 5713tnl 7 AM| barter shirt for vial Egwetha the Weaver tells you 'I was going to offer multiple items, but you can't carry it all. Take a moment to make room.' |99%hp 100%m 79%mv 5713tnl 7 AM| inv You are carrying: (Glowing) a shirt of shining silver chain a wyvern scale shirt (Glowing) (Humming) the amulet of control a belt of hardened raindrops a charred leather bracer an elegant silver rapier a Hell-Blade a captain's hat a green potion (Glowing) a potion of return (Humming) a spider-hilted steel sword (Glowing) (Humming) a blazing sword named 'Incinerator' a black iron broadsword the girdle of endless space a black, hooded silk cloak |99%hp 100%m 79%mv 5713tnl 7 AM| Nrichi looks at you. |99%hp 100%m 79%mv 5713tnl 7 AM| whe People near you: (PK) Migrulos The Cave of Webs Nrichi The Cave of Webs |99%hp 100%m 79%mv 5713tnl 7 AM| put return space Egwetha the Weaver closes her eyes with a look of concentration for a moment. Egwetha the Weaver's feet rise off the ground. |99%hp 100%m 79%mv 5713tnl 7 AM| Nrichi says 'har' |99%hp 100%m 79%mv 5713tnl 7 AM| You put a potion of return in the girdle of endless space. |99%hp 100%m 79%mv 5713tnl 7 AM| barter shirt for vial Egwetha the Weaver tells you 'I was going to offer multiple items, but you can't carry it all. Take a moment to make room.' |99%hp 100%m 79%mv 5713tnl 7 AM| snort You snort. |99%hp 100%m 79%mv 5713tnl 7 AM| inv You are carrying: (Glowing) a shirt of shining silver chain a wyvern scale shirt (Glowing) (Humming) the amulet of control a belt of hardened raindrops a charred leather bracer an elegant silver rapier a Hell-Blade a captain's hat a green potion (Humming) a spider-hilted steel sword (Glowing) (Humming) a blazing sword named 'Incinerator' a black iron broadsword the girdle of endless space a black, hooded silk cloak |99%hp 100%m 79%mv 5713tnl 7 AM| Egwetha the Weaver nods at Nrichi with approval. Nrichi hands a flame blade to Egwetha the Weaver. Egwetha the Weaver hands a small vial of diluted venom to Nrichi. |99%hp 100%m 79%mv 5713tnl 7 AM| barter 2.shirt for vial Egwetha the Weaver tells you 'I was going to offer multiple items, but you can't carry it all. Take a moment to make room.' |99%hp 100%m 79%mv 5713tnl 7 AM| barter amulet for vial Egwetha the Weaver nods at you with approval. You hand the amulet of control to Egwetha the Weaver. Egwetha the Weaver hands a small vial of diluted venom to you. |99%hp 100%m 79%mv 5713tnl 7 AM| barter belt for vial Egwetha the Weaver tells you 'I was going to offer multiple items, but you can't carry it all. Take a moment to make room.' |100%hp 100%m 85%mv 5713tnl 8 AM| Nrichi leaves east. |100%hp 100%m 85%mv 5713tnl 8 AM| whe People near you: (PK) Migrulos The Cave of Webs Nrichi Rocky Cliffs |100%hp 100%m 85%mv 5713tnl 8 AM| put vial space sc You put a small vial of diluted venom in the girdle of endless space. |100%hp 100%m 85%mv 5713tnl 8 AM| Migrulos the Vanguard ------------------------------------------------------------------------------- Level : 26 Sex : male Race : minotaur Ethos : Orderly Align : Evil Class : warrior Practices: 4 Trains : 0 Hometown : Seantryn Modan Exp : 173687 To Level : 5713 Sphere : Strength Age : young, 24 years old (32 hours) Hit Point: 100% Mana : 100% Move : 85 % Str : 23(23) Int : 16(16) Wis : 22(22) Dex : 19(19) Con : 21(21) Chr : 10(7 ) Carry # : 29/36 Weight : 461 lb 14 oz (Max 465 lbs) Gold : 7 Silver : 28 Copper : 140 Wimpy : 0 % Morale : Moderate Position : Standing Hitroll : 20 Damroll : 35 AC pierce : -87 Superbly armored AC bash : -71 Heavily armored AC slash : -99 Superbly armored AC magic : 4 Armored AC element: -65 Heavily armored vs Spell : Well protected vs Paralysis: Not protected vs Breath: Barely protected vs Mental: Not protected You are not hungry. You have 0 weapon specializations. You are specialized in sword. You are affected by: Skill: 'warcry' modifies save vs spell by -6 for 22 hours. Skill: 'warcry' modifies hit roll by 3 for 22 hours. Spell:whe 'detect invis' for 20 hours. ------------------------------------------------------------------------------- |100%hp 100%m 85%mv 5713tnl 8 AM| People near you: (PK) Migrulos The Cave of Webs Nrichi Forest Edge |100%hp 100%m 85%mv 5713tnl 8 AM| inv You are carrying: (Glowing) a shirt of shining silver chain a wyvern scale shirt a belt of hardened raindrops a charred leather bracer an elegant silver rapier a Hell-Blade a captain's hat a green potion (Humming) a spider-hilted steel sword (Glowing) (Humming) a blazing sword named 'Incinerator' a black iron broadsword the girdle of endless space a black, hooded silk cloak |100%hp 100%m 85%mv 5713tnl 8 AM| whe People near you: (PK) Migrulos The Cave of Webs Nrichi In Front of a Small Cottage |100%hp 100%m 85%mv 5713tnl 8 AM| barter shirt for vial Egwetha the Weaver tells you 'I was going to offer multiple items, but you can't carry it all. Take a moment to make room.' |100%hp 100%m 85%mv 5713tnl 8 AM| Egwetha the Weaver closes her eyes with a look of concentration for a moment. Egwetha the Weaver gets a wild look in her eyes! |100%hp 100%m 85%mv 5713tnl 8 AM| Egwetha the Weaver closes her eyes with a look of concentration for a moment. Egwetha the Weaver is surrounded by a resistance to lightning. |100%hp 100%m 85%mv 5713tnl 8 AM| pray It is saying my inventory doesn't have enough spots for these vials, but if 3 is the max, and i have 7 open inventory spots, that doesn't make sense. Buggy? You pray to the heavens for help! |100%hp 100%m 85%mv 5713tnl 8 AM| l The Cave of Webs The cave only goes a short distance into the cliff side before widening into a dead end. The ceiling is extends up into darkness, and broken rock of various sizes litters the floor. From as far up as can be seen and down to the floor of the cave, thin gray spider webs cross through the cave. In the center of the webs a figure works patiently at an ancient wooden loom. A draft from the cave entrance has discouraged the spiders to some degree, offering a path through fewer webs to approach her. A water skin made of tooled leather and steel lies here. A small wooden cudgel lies here. (Glowing) A small silver object glitters in the dust. ( 2) A silver bracelet engraved with hyenas lies here. A cloak of Nightwing. A tin flask lies here, engraving visible on its side. A piece of leather lies here, almost scorched to bits. ( 2) Some waterweeds lie here. ( 5) A rolled scroll with yellowed edges is here. A tarnished silver ring has been left here, covered with bile. ( 2) Some leather sleeves have been left here. A woman dressed in a silky robe works steadily at a wooden loom. |100%hp 100%m 85%mv 5713tnl 8 AM| whe People near you: (PK) Migrulos The Cave of Webs |100%hp 100%m 85%mv 5713tnl 8 AM| inv You are carrying: (Glowing) a shirt of shining silver chain a wyvern scale shirt a belt of hardened raindrops a charred leather bracer an elegant silver rapier a Hell-Blade a captain's hat a green potion (Humming) a spider-hilted steel sword (Glowing) (Humming) a blazing sword named 'Incinerator' a black iron broadsword the girdle of endless space a black, hooded silk cloak |100%hp 100%m 85%mv 5713tnl 8 AM| l eg Crouched over an old wooden loom is a woman dressed in loose, silky robe. Her dark complexion and elongated ears mark her as a dark-elf, but the round curves of her face betray her human heritage. A thin necklace around her neck supports what appears to be a holy symbol. While she works, one spider after another crawls through the web and across her. The gray silk of her robe is, upon closer inspection, woven from the web itself. Egwetha the Weaver is in perfect health. |100%hp 100%m 85%mv 5713tnl 8 AM| list Item (Type) <25 1467> the amulet of control (treasure) <15 2768> a flame blade (sword) <20 1621> an elaborate beaded onyx belt (treasure) <10 556> some black leather sleeves (worn on arms) <35 4266> a thin double-bladed axe (axe) <47 8568> a midnight dragon hide (worn on body) <28 2196> a topaz encrusted bracelet (treasure) <10 1310> a vest of woven spider silk (worn on body) <22 240> a small vial of diluted venom (potion) <24 528> a jar filled with cave spider fangs (trap ingredient) <25 456> a corpsebloom petal (poison ingredient) <20 655> a net woven from the silk of cave spiders (exotic) <10 806> a tail cover of woven spider silk (worn on tail) < 6 432> a wristguard of woven spider silk (worn on wrist) <10 1048> a waistband of woven spider silk (worn around waist) <10 578> a mantle of woven spider silk (worn about body) <10 1113> a pair of woven spider silk armguards (worn on arms) <10 684> a pair of fingerless spider silk gloves (worn on hands, worn on forepaws) <10 746> a pair of boots woven from spider silk (worn on feet, worn on hindpaws) <10 1179> a pair of woven spider silk leggings (worn on legs) < 5 295> a mask of woven spider silk (worn on face) < 6 360> a long cloak of woven spider silk (worn around neck) Egwetha the Weaver tells you 'See anything you like? A lucky thing you came along.' |100%hp 100%m 85%mv 5713tnl 8 AM| inv You are carrying: (Glowing) a shirt of shining silver chain a wyvern scale shirt a belt of hardened raindrops a charred leather bracer an elegant silver rapier a Hell-Blade a captain's hat a green potion (Humming) a spider-hilted steel sword (Glowing) (Humming) a blazing sword named 'Incinerator' a black iron broadsword the girdle of endless space a black, hooded silk cloak |100%hp 100%m 85%mv 5713tnl 8 AM| drop shirt You drop a shirt of shining silver chain. |100%hp 100%m 90%mv 5713tnl 9 AM| drop shirt You drop a wyvern scale shirt. |100%hp 100%m 90%mv 5713tnl 9 AM| barter belt for vial Egwetha the Weaver nods at you with approval. You hand a belt of hardened raindrops to Egwetha the Weaver. Three times, Egwetha the Weaver hands a small vial of diluted venom to you. |100%hp 100%m 90%mv 5713tnl 9 AM| whe People near you: (PK) Migrulos The Cave of Webs |100%hp 100%m 90%mv 5713tnl 9 AM| put all.vial space You put a small vial of diluted venom in the girdle of endless space. You put a small vial of diluted venom in the girdle of endless space. You put a small vial of diluted venom in the girdle of endless space. |100%hp 100%m 90%mv 5713tnl 9 AM| g shirt You get a wyvern scale shirt. |100%hp 100%m 90%mv 5713tnl 9 AM| barter shirt for vial Egwetha the Weaver nods at you with approval. You hand a wyvern scale shirt to Egwetha the Weaver. Three times, Egwetha the Weaver hands a small vial of diluted venom to you. |100%hp 100%m 90%mv 5713tnl 9 AM| put all.vial space You put a small vial of diluted venom in the girdle of endless space. You put a small vial of diluted venom in the girdle of endless space. You put a small vial of diluted venom in the girdle of endless space. |100%hp 100%m 90%mv 5713tnl 9 AM| l The Cave of Webs The cave only goes a short distance into the cliff side before widening into a dead end. The ceiling is extends up into darkness, and broken rock of various sizes litters the floor. From as far up as can be seen and down to the floor of the cave, thin gray spider webs cross through the cave. In the center of the webs a figure works patiently at an ancient wooden loom. A draft from the cave entrance has discouraged the spiders to some degree, offering a path through fewer webs to approach her. (Glowing) A gleaming shirt of chainmail lies here. A water skin made of tooled leather and steel lies here. A small wooden cudgel lies here. (Glowing) A small silver object glitters in the dust. ( 2) A silver bracelet engraved with hyenas lies here. A cloak of Nightwing. A tin flask lies here, engraving visible on its side. A piece of leather lies here, almost scorched to bits. ( 2) Some waterweeds lie here. ( 5) A rolled scroll with yellowed edges is here. A tarnished silver ring has been left here, covered with bile. ( 2) Some leather sleeves have been left here. A woman dressed in a silky robe works steadily at a wooden loom. |100%hp 100%m 90%mv 5713tnl 9 AM| whe People near you: (PK) Migrulos The Cave of Webs |100%hp 100%m 90%mv 5713tnl 9 AM| g shirt You get a shirt of shining silver chain. |100%hp 100%m 90%mv 5713tnl 9 AM| barter shirt for vial Egwetha the Weaver tells you 'I was going to offer multiple items, but you can't carry it all. Take a moment to make room.' |100%hp 100%m 90%mv 5713tnl 9 AM| sc Migrulos the Vanguard ------------------------------------------------------------------------------- Level : 26 Sex : male Race : minotaur Ethos : Orderly Align : Evil Class : warrior Practices: 4 Trains : 0 Hometown : Seantryn Modan Exp : 173687 To Level : 5713 Sphere : Strength Age : young, 24 years old (32 hours) Hit Point: 100% Mana : 100% Move : 90 % Str : 23(23) Int : 16(16) Wis : 22(22) Dex : 19(19) Con : 21(21) Chr : 10(7 ) Carry # : 27/36 Weight : 464 lb 8 oz (Max 465 lbs) Gold : 7 Silver : 28 Copper : 140 Wimpy : 0 % Morale : Moderate Position : Standing Hitroll : 20 Damroll : 35 AC pierce : -87 Superbly armored AC bash : -71 Heavily armored AC slash : -99 Superbly armored AC magic : 4 Armored AC element: -65 Heavily armored vs Spell : Well protected vs Paralysis: Not protected vs Breath: Barely protected vs Mental: Not protected You are not hungry. You have 0 weapon specializations. You are specialized in sword. You are affected by: Skill: 'warcry' modifies save vs spell by -6 for 21 hours. Skill: 'warcry' modifies hit roll by 3 for 21 hours. Spell: 'detect invis' for 19 hours. -------------------------------------------------------------------------------

>Carry # : 32/36 Weight : 460 lb 5 oz (Max 465 lbs)

Here's your key line. Not the carry part.