Scam. As you should be aware, given your experience.

How many legitimate buyers pay over the asking price? How many advertising threads are you going to start?

I apologise if I've taken your post the wrong way. It could well be that you sincerely believe that buyers will PM you with offers for more than you have an item listed for, rather than just bidding/buying.

Can I interest you in a bridge? A free Opera House is thrown in for the first hundred buyers.

FFS.