Warthog prop? Available from NKOK, a RC controlled Warthog can be yours for a mere $25. So save that money you'd have spent on your Avatar and spend it on yourself. You're worth it!
Later this month, NKOK will also release an RC Mongoose (that's the dune buggy-thing) and the Hornet (chopper-thing) for $25 and $35, respectively. Now, not to look a gift horse in the mouth but ... where's our RC Scarab?