Respectfully, this is why we should consider having a dispute section where bad deals can be settled and cases can be made for banning members for ripping people off.
Disputes are posted, the person who is disputed against is informed of the dispute and given a chance to respond, possible solutions are proposed and members can then get help from the moderators in resolving the dispute. People who are found to be ripping other members off are banned from the board, period. This would also give some legitimacy to the concept of good/bad traders. Good traders could have a reference section for good completed deals where members can post and check references before buying, and bad/banned traders resulting from unsettled disputes are listed as such by the moderators in another section. Deals go bad for numerous reasons and most of the legit members will be open to resolutions. I belong to another board where this concept is used and we have solved most disputes and weeded out many thieves. I can get together further details about how this works if anyone else is interested. Just an idea for consideration.
ARCADIAC!