[Request] Add ability to choose how many items we want to purchase

[Seraphor]

That sounds like a very convoluted system that puts alot of extra burden on the seller for the convenience of the relatively few people who are too lazy to go get their quest item(s) themselves. Nobody wants to spend an hour of game time just setting up their lots.

More convoluted than individually pricing and listing stacks of 10?

The system I just posted is far simpler, for buyer and seller, you just list an item once, with two fields to fill in.
We already have two fields to complete, but one of those is quantity and results in you posting multiple listings.