Hi,
I am new to bitcoin mining and I am a bit confused about the hardware:
Blackarrow: 100 GH/s - 350$
Technobit: 40 GH/s - 750€
Blackarrow: 160 GH/s - 2,499$
Hashfast: 400 GH/s - 2.250$
BFL: 600 GH/s - 4.680$
KnCminer: 550 GH/s - 4.995$
BFL: 500 GH/s - 22.484$ (FFS?)
Why are there so extraordinar huuuge differences in $/GH/s ? I mean, why should anyone buy an Erupter for 30$ (11 MH for 1$), when you get Blackarrow 100GH (285 MH for 1$)
And why are they _all_ sold out until 1Q?
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Is it even worth to wait?
Thanks in advance
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
M