china machine with swiss motor

So I have been wondering for a while if it would be worth it to by a stigma knock off http://www.ebay.ca/itm/Aircraft-Alu-Rotary-Tattoo-Machine-Gun-Stigma-Prodigy-Motor-Clip-Cord-Yellow-/271265122231?pt=LH_DefaultDomain_0&hash=item3f28a947b7&_uhb=1 and switch out the motor for an original from here http://www.tattoomachineequipment.com/prodigy-beast-4-5-watt-motor-plug If this works you would pretty much have a stigma for about 200$. So what do you guys think? Is it worth it? Because if the motor outlasts the body you can replace the body for 40$.