they are even cheaper if paid directly to Bitmain with bitcoins, but nothing beats speed/ease of using Amazon
$150 dollar savings beats Amazon every time
ah it can be pretty close because ANTS S1 make about $16/day, and if you place order today with BITMAIN, you probably won't have your unit for about 7+ days, so 7 x $16 is $112, so yeah slight premium for instant gratification, or at least fastest ANTMINER gratification if it ships ASAP.