I have a great batch 5 antminer S3 performing stably at above 470GH, selling for $200 in BTC (current value ~0.515 BTC), compared with Bitmain $280 or $230 w/coupon for only 453GH guaranteed. Shipping to continental US only, please do not give me lowball offers, price is fixed and could change very little and only if you want to pay for shipping.
As a bonus, I will give the purchaser four $50 coupons to buy more S3+ (total coupon value=$200), so miner that you buy from me is essentially free.