PSE 4 MAXIS - What's it worth??

I've got a friend that has a left handed PSE 4 MAXIS that he wants to sell. He wasn't sure what to ask for it. It's in great shape. He said it wasn't shot but maybe a hundred times. The string looks very good. It has sights, a stabilizer and includes a release. Is it worth $175? He says he gave about $500 for it a few years ago and hasn't used it.

I can load up some pics if anyone is interested.