Dear GW,
I am going to make a bold prediction, If you don't fix "buy/sell" method in this game, your core gamers will slowly leave.
I hate "buy/sell" so much that I no longer care about collecting loots, when I do get loots, I just sell them to merchant. The economy of GW is in serious danger of self destruction. If you don't fix "buy/sell," the game has no meaning and all sense of the word, "economy" is doomed.
If you don't believe me, try to sell something in any outpost, it is social chaos. People are shouting, "WTS/WTB" to get anything going... are you telling that this the best you can do?
You don't have to fix the game. you don't have to listen to all the people in the forum begging for a better system, i.e auction, human merchant... but we DO NOT have to support or play this game.
V/r
Cute W
C

IF it could be staged, it would be much better to have everyone stop selling, stop buying, stop running, stop trading, etc. for a week or so. All the folks who depend on the runs, buying perfect weapons, etc. will scream so loud in frustration, a system might be implemented. Either way, it doesn't have to be universal. A-Net could add a merchant's town in a future update or chapter, so it will have all the neat things people want in terms of trade, all in one little corner of the map.