Rockhopper Comp Frame / Fork used value
 

I am toying with the idea of upgrading the frame on my Rockhopper, if I decide to do so, then I would end up with a spare frame / fork. Typically what would a used 2009 Rockhopper Comp frame be worth? it would most likely include the Dart 3 fork (as if I upgrade frame, I will also upgrade the fork), which I imagine would be worth around $60 - $75 alone, then whatever the frame value would be on top of that.

Thanks.