ebay also has new traxxas rollers the revo 3.3 is $260.00,slash 4x4 nitro $225.00 if you have a rc thats wore out but all your eletrics,motor,tires.... are good then you can buy it and put all your stuff on it and have a new rig for half the price and have the old one for spare parts.as for buying used rc's off ebay besure to inspect the pics,info really good before you click the buy button.