If you introduce the option to buying in stalls I think it will allow an easier control of the current game economy. I don’t think adding buying option to stalls at this moment is a good idea. I would rather have a free-for-all market, global system, when giving players the ability to buy items when not in-game.
At the same time however if the players compete at trying to buy items it would lead to a more accurate representation of the value of items. However given the limited market, in both population and players that have gotten stalls, I don’t think that it will be likely for a lot of the tradeable items.
The system definitely needs to be more streamlined. Both in terms of the UI, and losing and managing a stall. I would also like if they introduced some type of penalty for having bid in excess, however with more players joining, once we have ~20 rich people the price of stalls might not be worth it. For some reason I feel like the current stall system is not an adequate one once the ball gets rolling.
Oh! On a slightly different note, I (or we) would also be curious to know some of the intentions of the stalls. What I mean is, are they suppose to feel like real life trader stalls? Are they for guilds, for individual people? To get rid of excess supplies, to establish respectable trading chains (X’s Fish stall, Y’s Runesmithing Trade shop, Z’s Dragon Bonanza)?