I am reading in the Contribute section about a "Contraptor's $10 Alltronics" stepper motor. I found a web site (www.alltronics.com) where they sell stepper motors, but I am not sure if it's really the one that the line refers to. There are several NEMA23 motors there, but none for $10.
In general, have you guys found some reliable, and not too expensive motor you would recommend? So far I ordered all my materials from the sources recommended in the part lists, and I was very happy with them. I have great confidence in your selection of sources. :-)