I'm looking to buy a couple of S3s - do I need 1 or 2 coupons? If anybody has any they want to donate I would gladly accept them (username colossus). If you're selling please PM me.
You can buy without coupons too

However, you can use 2 coupons on an order of 2 antminers.
they are a little tricky when you choose coupons for a pair as it automatically populates with just 1 coupon and you have to manually change 1 to 2, then hit apply.
I run out of coupons though.