IMO, a key rule... never bid against yourself. It wont get you very far in business. Hence, if you have a listed price, don't say another price, let the other person make a bid. Even if very very low you will gain information from them making an offer and sometimes it will be higher then you expect. Maybe even higher then you would have asked. Second key rule, in general (might be slightly different with cheap ass bottom feeding ebay buyers).... most people undervalue what they have and overvalue what they want.
Very interesting...I would have thought the opposite for folks trying to sell something. For instance, non-professional sellers (i.e., seller on Pawn Stars) think their item is worth so much more because of sentimental reasons, age of item, etc. Perhaps that's where the cheap-ass bottom feeding ebay buyer comes into play.
Brianpore always a wealth of info on this thread
Obviously if you have extenuating circumstances like family heirlooms, etc this goes out the window. Also, if you get people who are making a living doing this for business (and are successful at it), researching and know the market, their thought process will be different and their value will be based on the true market value. The statement is just an in general commonplace assumption which holds pretty true for day to day people when they buy or sell something casually.