Edit: player stalls and bulletin boards will fill this role instead so this is fine.
Just saw from the AMA stream that Auction Houses will be introduced at some point during phase 3, but I dont think this is very good for players trying to engage in this testing. Without it you will have a really chaotic and slow economy that will not correctly represent the values of many different items. Because its extremely tedious to trade with other players especially when you have a game built to be massive. I know the area is much smaller than the actual game but still.
Probably not too clear, sorry about that but I really do think this is a mistake to not have earlier in the testing. It helps broadcast and normalize the value of items and works as a form of player quest creation if you have buy orders implemented.