I do not know if you would have to use a diferent market or if this could be integrated into the current one, but make it a dual market system.
I can for instance post that I am buying (set amount) copper @ 2400 so in the market someone could click sell instead of buy and sell me a copper for 2400 till i reached whatever amount i wanted to purchase or if its its easier to program we can just post multiple buy listings etc. Just a thought.
Not bad i like it,but its like irony BUT it is still good but still if im going to do for example:
I am buying Gwen 1000 each level 1
and you are buying Gwen 1200 each level 1
i bet majority is selling for you,i hope you get my point BUT this is not bad when im looking for a card i want.
Just adds alot to the market if i am only buying a couple Gwen, just reverses it sellers can get their cash quick instead of waiting for something to sell they may sacrifice a bit in profit but they can pop in and clear out then go to the for sale market and get what they want.