Keep it. They typically aren't worth much as a trade or a straight up sale.
I'm not fan of Taurus but they do make some guns that hold up well and are pretty good shooters. If you are lucky, you might have ended up with a decent gun. Try it and find out. If its junk, and it may very well be, it didn't cost you a thing but your time.
"He who laughs last, laughs dead." Homer Simpson