I recommend for you to accept a forum escrow, at the very least. Forum trades should have forum escrows, not third party websites.
What's an S7 coupon? Is it a discount code? If so, how much does it discount? I may be interested.
Its those coupon that save you 100$ on an S7 order. They are being traded in significant volume in the Computer Hardware section. Itself is just a coupon held in your bitmain account but since its for mining hardware, its in that section.
https://bitcointalk.org/index.php?board=75.0Most trusted escrow is selling them at that price right there. So you'd have to lower your price and or accept forum escrow if you want a chance to find a buyer. Unless you find some random.
