S2 SOLD OUT....DAM I was just on the page, refreshed and sold out....DAM
No big deal. Buy some S1's instead; they're not a worse deal.
exactly, the S2 would only save me $69 a month in electricity. I am going to buy more S1's instead
Annoying that the numbers don't work out well since they're not even multiples, but let's use 1000/180= 5.56 S1s per S2. Right now an S1 is $625. Along with that you need say $66 per S1 for power supplies (~200 for a 1200W for 3, or ~135 for an 850W gold for 2). That's $691 per S1, or $3842 for 5.56 of them. Right there you're almost at price parity; the S1s cost $57 less than the S2.
Now, if everything ships on time you'll get your S1s two weeks earlier than an S2. Since the diff just changed, let's say you'll mine 14 days with the S1s at current difficulty before you'd get the S2. You'll make 0.116 BTC a day. At $630/BTC and 2kW at my electricity rate (0.12/kWh), that would be $73.05/day before and $67.29 after electricity, so a net of $942.06 earned with the S1s while waiting on the S2 to arrive.
Now, how long would you have to mine to make up the $57+$942 difference? For me at $2.88/kWd, it would take just shy of a year of mining (347 days) for the power savings of the S2 to make up for the effective price difference + extra income of the S1s.
