I determined that the motor/gear assembly is available separately. I did an online search for the motor (Bosch part 0.130.821.071 - motor with 10 tooth gear for Reitter regulator assy.) and found the following: Retail $330.00, most vendors selling for $154.00 - $172.00, purchased for $66.14 with free shipping UPS Ground. As usual, it pays to shop around. Hopefully this post will be useful to someone in else the future.