Just realized that I hadn't pointed out one good option for finding nice Stepper motors on the cheap: Several of the motors listed at
http://www.piclist.com/techref/io/st...tep/motors.htm are found in old laser printers and photocopiers. If you call up the local computer and office equipment repair places, they often scrap these old units and will happily give them to you in return for towing them off. Once you pull the motors (any anything else you want) you can dispose of the rest for them in return. I've gotten a number of stepper motors out of old printers this way. The old HP printers had some monster motors in them!