TBH I'd think $85 for an honest to goodness new in box unused SLR is not a bad deal by any means. Those Vivitar SLRs cost over $100, and that is likely the next cheapest option if you want a real 35mm SLR.

I doubt the camera itself is particularly good, but the Zenitar 2/50 lens has a good reputation and you'd probably spend $30-$40 on a used one on ebay.