thought of this a while back...
ok you ever notice that some weapons or armor have the same picture thing like http://www.thottbot.com/?i=17736 and http://www.thottbot.com/?i=8155 heres what you do announce that you want to sell high level weapon some one when you get a buyer put the high level weapon in wait till they put money and very fast change the weapon with lower weapon if you did it right the person will be paying the price for high level weapon and getting a low level one hahahaha i made 500g in 2 hours. i also suggest that you use an alt just incase they decide to report you.. so stay next to a mailbox so u can mail to your main and quikly delete the alt
i tried to keep this to myself for a while so blizzard wouldnt find out and change stuff..so enjoy and PLZ! dont spread around other sites
happy hunting!!!!!