one thing up front, fg made two different monster beetles, one that was based on the marder chassis and one that was based on the monster chassis, the monster chassis came with 26cc zenoah , the marder with 23cc, the marder has single suspenssion the monster double, marder has side protectors out of plastic monster aluminum
The price difference between both is approx. 70 $ of the retail price
if its in a good shape and has the 26cc zenoah on it, i would say yes, if he includes radio equipment, I've seen fg s sold for 750 lately used with rc stuff on a cpl occasions.
hope that helped a bit. if you need more details about the difference of both, feel free to add me in msn or such
found two pics for you:
fg monster beetle pro / monster chassis based:
fg monster beetle / marder chassis based: