I hate to ask this, but I can't find the answer anywhere. These coupons, I have 20, can I only use 1 per new miner purchased or can I apply multiples to a single miner purchase? Also, are they restricted to which miner I can apply them to?
You can use 1 per miner purchase and the type they can be applied to is written in the title/name of the coupon.
If you wish to sell them please use the correct marketplace forum.