How much do you think you'll be able to sell an Antminer S1 on ebay for in May/June ?
I'm starting to think I'm crazy for spending 2.9 bitcoins on two Antminers only to barely be able to make 2.9 bitcoins
That's what they said about buying them at 2.2BTC, and I've since paid off 1.5BTC of that. It turns out my estimates of paying them off mid-May were pessimistic, it's looking more like it will be early April instead.
Bitmain always prices the miner at where the miners share a profit with us, though this is not any guaranty, but only intention, only educated guess for the future of mining difficulty. However, it seems that Bitmain's guess is better than those 25%~30% exponential assumption under which the difficulty fly out of the galaxy.