Hmmm, a 50cc motor cant be worth much, if anything.
Mind you, with the cost of some 50cc scooters may as well just buy a new one.

I double the value of mine everytime I fill the tank
That being said its fine for around stokes valley/lower hutt and I used it for my BHS
It also has a good top speed for a 50cc, but just takes to long to get there