Holy crap NiBo, that is very good. I really don't know the prices of things, but I'm sure that it'll fetch some good money.
Anyway, here's something I found recently. It is the highest stat item I've ever found on a single piece of gear:
Yeah, I know the weapon sucks and it'll never sell. However, I was glad to have found it.
Here's another item I found recently:
The best item I've found so far, sadly.