I'm thinking that CatDaddyB5 is probably in the ballpark. I was thinking about $350 give or take depending on someones desperation. You can have yours rebuilt to better than new and even ported for about $700 through a couple reputable companies or about $100 if you have the ability to DIY. As such I can't see to many people willing to pay much more than $300-$400 for a used one.