my last 2 buys (8*S1 and 1*S2 in the last 14 days) have not come with any coupons, and I am now out of 0.055 coupons. All i have left are shitty 0.02BTC coupons ($12 off - whoooooo!)

Its up to bitmain to give coupons - I do not expect any but it sure is nice when i get them. Generally the coupons have been given at times where a price jump or delay have been reason for some value loss to buyers.

The 0.055BTC coupons seemed to be given to everybody at once based on thier order history or something. I went to buy an antminer one day and they were suddenly in my account, despite not being there a few days earlier and not having bought any miners for almost a month prior