I realize my suggestion is not the least burdonsome on the seller, but there are ways to simplify the sale, such as using the control-click on item to place the description into the list which you could just edit with the exact percentages and plusses, and once you have your list you could copy it with ^C and when changing to another town, just paste (^V) it into the new town's bulletin.
I'm just trying to simplify the system for the programmer. also, if the system reduced the server traffic, that would seem to be a bonus for Anet, which might get them to implement it faster. You're right, pajamas, that it would be much more efficient for both the seller and buyer if the system worked across all districts in a town, and perhaps if it reduces the server load enough, that would be a possibility. The amount of times GW crashes now a days seems to indicate that the servers are almost tapped out.
Of course, they could implement a new merchant type, the auctioneer, and you could give the merchant an item, it would be seen by all checking in with the auctioneer, just like the material traders are, but with a count-down timer added... the item goes in at a base price, and there is 10 seconds for someone to "buy" it at that price, but instead of allowing the exchange to go through, the auctioneer steps up the price to the next level for 10 seconds. if noone buys it at that level, the auctioneer lets it go at the previously accepted price, otherwise if someone is willing to pay the new price, he steps it up again and again, until noone is willing to go higher. he then sells it at the last accepted price...? of course i should post that at the auction thread:
http://www.guildwarsguru.com/forum/s...=20264&page=10
To prevent scams, the autioneer could take 10%-25% of the aution price, so you can't have friends keep buying items just to raise the expected price.