I mean you won't make tons of money off it, but it's still a powerful CPU. I wouldn't mind having one if I had an fm2+ motherboard. If I was you, I would just put it up for sale in the "deals" section on this website and ask for the best offer. Or put it on ebay and I can almost guarantee it would sell.
The thing is, they are hard to find. Any of the 6 core Phenom ii's are hard to find...especially the higher end ones like the 1045, 1075, 1090, and 1100 being the best one.