I see no place on their order forms, or a way for that matter, to use S2 coupons to apply to the S4 to get another $200 off besides the coupon they just issued for $200. Can anyone confirm that they are allowing S2 coupons to be used for a discount?
I believe you can only use a single coupon per order--they don't stack.
@BITMAIN, please clarify, is it one coupon each order or one coupon each unit?