Quote Originally Posted by old man emu View Post
1. The sainsmart stepper has a 300mm lead screw attached. Lead screws are expensive, and you would not normally use them on a DIY printer. Everything on the sainsmart web page is expensive.

2. I'd expect to pay about $17 for a stepper motor, so with the extra items, that's is a good deal on ebay. There is usually nothing to go wrong with stepper motors. It is usually the arduino clones and RAMPS board that you will have trouble with.

Old Man Emu
The Sainsmart one has a nicely machined multi-start leadscrew that's better quality than threaded rod..The ebay link is just stepper motors with pulleys. They seem to be awesome assuming they actually work.