It's simple, people on ebay are morons.
Assuming BTC stay's at 1000, and assuming the difficulty doesnt increase at all...
You can generate $7 a month.....
So they are buying them now for 60-70$.. 10 months to break even..
They simply don't understand how miner's work. Same reason people are renting out 24hr's of mining for STUPID rates. Can't make what your paying for your rent. lol
BTC wave has hit the moronic public
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)