Re: Announcement: Bitmain launches AntMiner solution, 0.68 J/GH on chip
C1 Batch2 opens sale now, Cooling Kits are included 
I don't get it. 3 BTC for an S4, or 2 BTC for two C1s. Granted you need a PSU ... but they aren't worth 1 BTC.
M
Exactly - both are over-priced, especially now that spondoolies have lowered their SP20 price.
C1, S3, SP20, and many, many other models & manufacturers have all had their prices reduced in the month since S4 was last corrected.
Difficulty has risen a few times over since then.
Regardless of which model costs less, or any comparison, the S4 is loooooong overdue for a price cut.