[Draenin]

If players are jacking up their prices and you're fool enough to give in, whose fault is it that you're out 1500 diamonds for a ring? And does that instantly set the standard for prices? No. The buyer just walks around complaining about how much s/he spent on it to everyone, and people seem to assume that's the new selling price for the ring. The only good reasoning behind it is that sellers are probably trying to squeeze you for every diamond they can.