well the 10% discount is nice, but there are no more scrypt MH/s on sale. The price for SHA on the other hand is quite high, even considering the discount, coming to
0.211 BTC for 100 GH/s or 2.080 BTC for 1 TH/s!
Let's hope they get x11 mining on the way soon, or reduce costs by getting new, more efficient hardware...
I think the price is ok, but I am just comparing that to GAW miners.
The payouts for 10GH/s with GM is very close to what I am getting to a Genesis Hashlet with 15 GH/s
20GH/s with GM now costs 15.99, so around 8 USD per 10GH/s
You can get Genesis Hashlets for around 5-6 USD per 10 GH/s on Hashmarket so they are very, very close each as like I said, you would get a slightly better payout with GM, but the cheaper price from GAW miners would help counteract that.
Of course you can always sell your Hashlet further down the line so that gives it a plus point, it is quite hard to decide, although with 10% off with GM on Monday, that would help