What does this mean, especially the reference to the coupon. I am guessing that Bitmaintech offers no price protection for people like me who paid 1.9BTC only 1 week ago!?
Bitmain gave out 0.02 coupons to people who bought at 1.9 BTC, log into their site to see it in your account.
As far as "only 1 week ago", the new price applies to devices which will ship after feb 8th, 9 days from now. If they hadn't lowered the price substantially they wouldn't sell any at all at least not to sane customers.