2. Auntie Mame by Patrick Dennis

Price: $10.20 at amazon.com
I was stunned to discover that this was initially rejected. I mean, not only is it a fantastic story, but it is one of the best musical's ever. It was rejected 15 times before being published by Vanguard Press, though, and now it's also a fantastic movie. I guess you really do just have to take every rejection in stride.