You can buy low rpm motors at several of the online electrical supply stores, especially those that cater to hobbist, etc. I bought 2 of them several years ago for less than $10 each. I recall the minimum order was $25.00 so I ordered some extension cords to make the $25.00. The company is Herbach & Rademan (H&R Company) at http//www.herbach.com. The motor is called a synchronous or timing motor and you want a speed of 4 -15 rpms. This is just a motor with wire leads which you need to attach to an electrical cord for plugging into house outlets. Cabela also has motors in the $20 range. I think to Cabela motors already have the proper cord with a plug.
Dr Bob
Bob Widmaier
My biggest fear when I die is that my wife will sell my fly fishing gear for what I told her I paid for it!