Yes the SMG cars are less. The cost to convert a smg to 6-speed can range from 2500 to 4500 depending on parts used.I'm going to assume prices for the SMG are quite a bit lower than a 6 speed? There was an episode of Wheeler Dealers where they made an SMG car into a normal 6 speed. Looked fairly easy; definitely easier than finding an affordable original 6 speed car!