Price specification:

module   lower hashrate   upper hashrate    price ($)       bitcoin
                   (MH/s)           (MH/s)
6          76.8                    91.2                  12,000            28.57
5          64                       76                    10,000            23.81
4          51.2                    60.8                  8,000              19.05
3          38.4                    45.6                  6,500              15.48
2          25.6                    30.4                  5,000              11.90
1          12.8                    15.2                  3,500              8.33

Note:
a). The lower, upper hashrates are based on the single A2 chip's hashrate 1.6Mhs, 1.9Mhs. And 1 module contains 8 A2 chips. The real hashrate is close to upper hashrate.
b) The exchange rate is $420/bitcoin. It will be adjusted weekly. If there is 30% change in the price of bitcoin, we reserve our right to adjust the bitcoin payment at that time.
c) We reserve the right to temporarily change the price, also we have the right for the explanation of the price specification.