Do you have eyes? It's $1360 for 3,600 hash. Much cheaper than GPU rigs.
Mistake !! 1 Unit = 65$. So, 10 units = 650$ for 600-700Kh/s max !!
1 unit has 6 chips in it.
10 units = 60 chips (3,600 hash)
Source ?
If you go to the link and read the specs, you see it says Gridseed GC3355 X 5. Which means each USB device contains 5 chips. Each chip does around ~60 KH/s. So one of the USB devices will do ~300KH/s. They are selling them in batches of 10. So for the $1360 you get 10 of them. Basically totalling ~3.0 MH/s
Here's what is says in chinese:
品牌:Gridseed 格瑞思捷
芯片:Gridseed GC3355 X 5
You can see it says there are 5 chips in the device.