Re: Hello, Motorbicycling!
I just realized that you mean electric start. That's not available as far as I am aware. There are 50cc scooters that are in your price range that would give you what you need.
For instance: http://www.powersportsmax.com/produc...ducts_id/16093
66cc HT on vintage cruiser frame.
Micargi Rover with 79cc HF. The new project!