Rework the market system to allow purchase offer listings and eliminate undercutting

[Barraind]

You kinda just outed yourself right there, showing that you don't actually know how the GTS/GE actually works.

Except it doesnt give you the lowest priced items, it filters by oldest listed for at or less than that price. AND, depending on which of the versions of this system you're using, charges the buyer price rather than the seller price. So no, you cant actually buy out the cheapest X items at any given price

If you think this market system is unique to runescape of all things, you're not paying attention to MMO economies. (Psst, CoH had that same system 3 years prior)

Again, the GW2 system is far superior.