or do some book hunting in "used books" stores in your area...
I've found 3 copies of End Run that way (bought 2 of them).
Funny WC/used book store-related story. Summer of '99, back before the WC movie had grown on me, I sold my WCM novelization (as well as a bunch of other old books I never read anymore) to the used book store where I got End Run. A few months later, I realized my mistake and raced back to the store and, thank Sivar, the book was still there and I bought it back!
Okay, that wasn't so funny...