[thecatspajamas]

It's hard to tell from the tiny image shown, but looks like a nice-quality (for a snapshot) photo of Killer. As others have said, many snapshots tend to be of the terrible/out-of-focus sort, which limits their resale value. On a nice one like this of a HOFer though, I'd be a quick buyer at $10, re-list at $39.95, and probably accept any offer north of $25 for it. I think you'll find a wide range of pricing on snapshot photos in general, but for this particular one, that's how I personally would go about it.

(Or knowing my luck, I'd be undecided on how to price it, so I'd run it at auction starting at $9.95, it would get 1 bid, and I'd end up taking a loss after fees.)