Sometimes it sucks trying to sell old equipment. You value it a lot more than someone else will and chances are that will reflect in the price you actually get rid of it for. If you're not going to ever use it again, just try to get $125 or so for it, then if they offer $100/75, well that's a hundred more than you had yesterday. Just don't be one of those people that try to sell a 4 year old board that has never been waxed or edged for $250 because when you bought it was worth $500 new. I know you didn't specify exact age, board quality, etc, but that was just an example.