Re: 49cc more expensive than 66cc?
Pat I am pretty sure the motor in question is The 2stroke China girl engine we all love so dearly. There is a thread around here somewhere explaining the difference in measurements from china and USA. So the 80cc is truly "around" 66cc and what is claimed to be 49cc is closer to 40 "something" cc.
And if it hasn't been said before Welcome to the forum.
Hope it Helps. I am also a proud member of the 20 MPH. club