The following three changes will take place likely in the next few days.
1) Dissolve the Shops section and place everything into the selling section - it seems too arbitrary to have a section just for shops. Let people put as many items as they want into a selling thread.
2) Create a new board specifically for price checks. People seem to want to create them anyway, regardless of the rules or not. This new board would have one topic for each in-game server. Users have to post in each specific topic to get a price check. Users cannot create new topics. A moderator/admin will create a new topic each time a new world comes out.
3) Remove the rules regarding price checks and three items for selling threads.