I order twice at Bitmaintech,
I received this newsletter today
Greetings! We are glad to inform you that BITMAIN has kicked off its promotional season! BITMAIN began business exactly one year ago, and is celebrating its 1st birthday with great discounts. Coupons were issued to previous customers last weekend, to be used against the S3+, S4 and C1 miners.
$50 coupon for each S3+
$400 coupon for each S4
$50 coupon for each C1
I give away my coupons for free, got tons of them : )
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