Quote from: klondike_bar on January 15, 2014, 05:47:27 PM

Quote from: BITMAIN on January 15, 2014, 02:56:59 PM

Mining Stably, Delivering on Time, if not Pre-Shipped.

Now we need only 1 confirmation after you paid the bitcoin. As we will double check before we finally ship, We believe double spending attack is not rationale.
2.2BTC/Unit, Shipping included.

The first batch of Antminer buyer is going to ROI in a day when I write this post

When Bitmain first introduce the miners on the market, we sell on 2013/11/23 a 180GH/s ANTMINER at 4.75 BTC. some people fear the increasing of difficulty, while some other community members bought it.

What if these miners started to mine on 2013/11/25, how many coins has the S1 mined, assuming not overclocked, 0.10$/KWH, 836USD/BTC? The number is 4.697BTC, electricity bill deducted. The miner who bought S1 on 2013/11/23 @4.75BTC per unit needs only another day to enjoy the ROI when we write this post, without overclocking.

Now according to our model, which has been proved accurate or conservative in the past, we believe the 2.2BTC is profitable price for the miners, and a fair price to distribute the future mining revenue between the Bitmain and the mining community.

Good news

To hose who say 2.2BTC is too high, you need to review your calculations - difficulty is beginning to settle a little towards 20% increase per jump which results much differently than those 96%/month estimations. I think that at 2.2BTC, you should expect it to mine 2.1-2.6BTC in its useful lifetime

I have units from the original 4.75 and 4.25 auctions/group buys, and looking at the income they have provided, they have made *approximately* 4.3 and 3.95 BTC each - a little lower than bitmain's estimate, perhaps because shipping time/delays and system setup/down time were not factored in. - In either case, both systems need to pay off far less than 2.2BTC of their costs

The product is simple and fairly energy-efficient. it would be nice to see an option added to purchase units with a secondary fan installed, or perhaps slightly quieter fans, Considering I have added a second $20 PWM fan on each unit ive bought so far

Super
http://bitcoinwisdom.com/bitcoin/difficulty
My estimate is around 35%
Second please let some who participated in those group buys to comment reality against projection
By reality I mean separate pool/s account and the ACTUAL TRACEABLE income
Have in mind that in reality mining income is at least 5% less iff all is super fine during the period and you do not need calc for that