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.
An actual chinese person that translated this stuff properly says it's basically $500 for ONE USB miner hashing at 360KH/s... so no, you're totally wrong and showing your stupidity again buddy. They were only sold in batches of 10 USB miners, to only 40 people. 360KH x 400 = 144MH/s total... hardly a big deal. The only benefit of scrypt asic so far is the power consumption - but that's not going to really matter to GPU miners for at least a few months.
(60-70kh/s)...