How much does should a used Abit nf7-s rev 2 go for?

I currently own one, but I need to build a computer for my step dad, and I liked my abit so much, even at stock speeds the abit has way better volt rails and the boards just dont seem as cheap (except they did get cheap with the later versions) but what can I expect to pay for a used one?

proabably 50-60 bucks .. these are excellent boards and they go for 82.00 new at newegg http://www.newegg.com/app/ViewProductDesc.asp?description=13-127-166&depa=1