This is my trading policy that I posted in MD forums.
HLS's NEW Policy and Feedback Thread - MD Account Buy Sell Trade WoW Conan FFXI RS LoTRO L2 HGL MS SWG EQ2 WHO Warcraft
Same policy applies to the buyers I meet here
I only count the HIGHEST bid of the bidder who agrees to that policy.
I have had much higher bids than $650, but I turned them down since they said they would not follow my policy.