I found a $1 note from 2013 that sold for $500 on eBay. That one is pretty beat up and has writing on it, so the condition of the note doesn't matter all that much.
My first thought was, well.....It's worth ten dollars, but then the serial #?, OK, as others pointed out, you may really have something. There are collectors for everything, and THAT $10 bill might be one they really want.