a friend of mine has a 2004 honda crf150f that is in brand new condition and he is selling it. all it needs is a motor. it has tons of aftermarket stuff on the bike like, did chain, rethal sprokets and handle bars. acerbis handle cover, full pro circit exhaust system. is this bike worth buying at $700? im trying to decide. how much do used/ or new crf150f motors run for $?