Without a clear definition of price from ROAR, there is much ambiguity. Some may see this as an optional service that is provided on the behalf of Trinity to which they refer to as Certified. If you were to buy a standard motor, upgrade the rotor and add ceramic bearings you will exceed the $149 maximum price. This doesn't make your motor illegal. The base motor is about $99 the optional servicing to make it certified is added onto the price.