Not trying to cause any problems or anything, but what is the reason to buy these units at this price? Are those interested more getting these for a hobby without concern for if they make back the investment, or am I wrong to think that at these prices, there is no way these will ROI? Just wondering the logic behind it. I was interested in getting one (or a few) but I did the math, and it doesn't make sense. Perhaps my math is wrong. Are these at least in some way profitable? Thanks!
Your math is correct. This price puts them on the same level as the ASICMiner usb's, except that they use less electricity and space.
So the reasons for buying them are the same. These will replace the AM Unit in the market, if supply can keep up.