i buy them damaged/broken fix em up up, use them for a bit then flog em on ive just sold my jato 2.5r, i have a tamiya tnx 5.2r in my shed but the crankshaft snapped, so hunting for an engine for that, ive had loads of diff trucks, but not done much with rc's since Christmas to be honest money is a little tight at the mo... i got my son a lrp blast 2.4ghz for Christmas , im thinking of upgrading his motor and esc soon