By my math, your coupons (at 0.3btc) afford me a 0.0655 discount on what I can pay cash for from someone who has a reputation.
I can buy 10 from Canary for BTC0.50 each
Am I figuring this wrong?
Im not sure how you figured out number "0,0655" but ... my one coupon = 1 Usb miner, that means 1 usb miner for 0.3 Btc
And yes you can buy from someone who has reputaion...your choice ....