We were thrilled to find one in like-new condition, for $15! We brought it home, washed the seat part and sanitized the rest, then let G give it a go.
He loves it! Of course, because it was in such good shape, I had to know what we would have paid if we had bought it new. I tracked the exact one down on Amazon and found that it sells for $70. Needless to say, I'm more than happy with our great deal. I might have to check out Goodwill more often.