Ebay Stepper Motors (datasheet included).

I found some stepper motors on Ebay you get three of them for $126.68. Can you please take a look at the datasheet and tell me if these are any good for use on Mendel. Also let me know what you think of the price and if you have some where better to buy steppers, please let me know.
Datasheet (http://www.slidesandballscrews.com/pdf/steppermotors/SY42STH47-1684B.pdf)

Those are good motors, I have them on my Mendel. They are cheaper from where the datasheet came from: [www.slidesandballscrews.com]

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[www.hydraraptor.blogspot.com]

Thanks for the reply Nophead! I feel silly now that I have seen the reprap wiki page on stepper motors... It clearly shows the SY42STH47-1684B as being recommended for Mendel. I went ahead ordered up 5 of these, today, from Zap Automation. I figured I would pick up an extra one just in case one get fried or I want to add a second extruder to my machine. Total price with shipping to Washington State was, $136.66 US Dollars. Zap Automation was definitely cheaper than Ebay!