In fairness to bitmain, they do compensate with extremely generous coupons, that I appreciate.
I keep hearing about coupons, how does one get coupons?
You can get them if you happen to buy one of the expensive miners and Bitmain drops the price soon after.
Or you can buy from those who have them - coupons are transferable. Just be careful, lots of scammers in this coupon business.