The motor I bought with the kit is the 80cc engine that all the sites are selling, just different people, the place it ships from is in CA, so it is within the states.
I payed $164 including shipping. Just have to what and see how it works out.
The name on Ebay is motor99motor, the name of the business is pcc motor.com.
They sell all kind of parts for motorcycles etc. They are Ashen and connected to the manufacturer in some way, I believe.