Has anyone given much thought to allowing a player to barter for several items with one single item that is worth the multiple items?

For example, if I wanted to buy 10 "snickerdoodles" and each costs 500 copper, and I had a single item worth 5000+ copper, I could barter for the 10 snickerdoodles with just the one item for trade, rather than having to carry 10 items worth 500+ to barter for 10 "snickerdoodles"?

Reason why I ask is that if I took a diamond ring to a pawn shop, I could trade it for multiple items. There are several instances in game that this would be helpful with, not to mention a certain cabal that frowns upon using coins.

Just curious if this has come up before, if it has been given any consideration, and if it has not or will not be considered, why not?

Life is like a game of chess!