how much to subtract for broken hinge when selling a laptop?

majorduck

Estimable
Mar 31, 2015
1
0
4,510
Hello, I currently have a Lenovo y-50 laptop. A while back, the left hinge broke (which I hear is a common problem) and I did a sloppy job of repairing it (I had to screw into the back plate and put a bolt on the back of the lid). I'm planning on selling it on ebay and I'm not sure how much to subtract off the average of ~$650.

P.S. there is no warranty