For those wishing for a 13" Left 4 Dead 2 Boomer plush doll, you're in luck! The bonus? It makes 10 different in-game sounds. Designed by Alexandria Neonakis who was responsible for the Left 4 Dead holiday cards, Boomer is confirmed to be followed by moire special infected.
Boomer sells for $49.99 at the Valve Store. I'm not certain, but I think you can receive free shipping for orders over $50.