If it's a men's bike, and it's your size and it's ridable right now then it's worth it. If it's 2 out of 3 of those things, it's still probably worth it.
the metal in the seat ain't worth much. I got three busted Brookses in the basement. They don't sell replacement leather. I'm suprised at just how busted they can look, though, and still be rideable.