I recently bought a 92 kx 125 with all basically new plastic. I replaced the crank, bought a new cylinder, had it replated to match the 20 over piston, had the motor completely checked, and replaced the water pump impeller. Spent over 1000 alone on the motor. Also has new air filter, new seat cover (not completely stapled on), new rear tire, new brake pads in the rear, and a new chain and sprockets. The bike is in great condition. I am wanting to sell, to make room in my garage, and would like to know about how much i should ask for it.