Hey, I'm director of a soon to be ex-Bitcoin retailer in the UK. We have been provided with 9 $200 off S4 coupons for the Bitmain website.

We're selling these for 0.1BTC (approx $40). If you want proof of my authenticity I'd be very happy to provide you with that. And also happy to use an escrow service for this transaction!

Please PM me if you're interested. We're also happy to give a discount for bulk purchases.