I think the $400 coupons will be there at 8pm

i am afraid they will never let you buy their miner at that price if they see your word

That last block is a doozy! Cmon luck drag yourself up into positive numbers I want my BTC!

Same thing has been said for just about every asic preorder in history.

It will be the best until random chinese company ______ begins shipping their equivalent hardware for less and a month earlier.

Yes thats a % calculation should be less than 1% normally at 180Mhz
If you run higher than 180Mhz then you will get higher HW errors and have just invalidated your warranty.

it is in % of accepted?
so with 212.5 Mhz i have 0.001% or 0.1% or...?

that is what the most of the people thinking currently, but i donot think so that the 17% increase on difficulty for 11 days will really happen by now, it is no reason, on one hand, you assume an very high increase ratio and on the other hand, you point out that wisdom people will not invest in miners. these two things are against each other naturally.
here is my roi analysis and i paste it here again
          ROI analysis
Many people make decision whether the miner is worthy to buy on ROI analysis , and i will share my thought on it with you.
First, you need to consider the following two questions:
is the mining itself will disappear after six month?
What is the speed of the fastest miner can perform after six month and what is its price?  

I will give you my answer to these question.
is the mining itself will disappear after six month?
The answer is definitely no, only the bitcoin exist, no reason that mining itself will disappear, and like most of the people in the forum, i have strong faith on bitcoin.

What is the speed of the fastest miner can perform after six month and what is its price?
I can’t tell you the exactly number of that, but my answer is not exceed 2T with the electricity consumption of 1000 watt, during the last one year, with the appearance of ASIC, the hash rate speed you can gain with 1000 watt has increased from 6G to 1000G. But it is almost the best value we can achieve based on current technology. Although i am not an professional electrical engineer, i can see that the increase of the hash rate of the chips are closely connected with its manufacturing technology, which have been increased from 110nm to 28nm by now. But as i know, it is almost achieve the limit of current chip manufacturing technology also the limit of physical law. Although 20 nm manufacturing technology is possible but the cost will also increase rapid and may be not worth to use. So we can achieve the conclusion that the life time will more than 6 month.

Now we can go forward to the second question here, what is its price.
I cann’t answer this question exactly also, but i does know that its price will not below its manufacturing cost. That is very simple to understand, the factory have no reason to sell them unless they can profit. As i know, the manufacturing cost for one dragon 1T miner will not below 1000$(chip, psu, Raspberry Pi, fans, shipment fee, all these thing need cost and will not disappear) .


Now we can go back to the ROI analysis, for most of the roi analysis, it will assume one miner will only have 2-3 month life, but based on above analysis, we can see that will not happen, so there is must something wrong with the current ROI analysis.

Here is my third question, what is the the most possible number(in %) of the adjustment of difficulty for one round (12 days) in Oct 2014?
I will give my answer later, but now, i want to hear your guys opinion

Secondly, its 3+ months till August.

I hope it works out for everyone, but I also reckon that you would have to be a bit naive to think that the SP30 will be out there on its own with no competition at the price point or even efficiency level. You think the Chinese are going to stop? You think that Innosilicon, the Avalon people, AM etc are just going to give up? I think theres even a reasonable probablility that KnC will have Neptune out there before then even though some may scoff.

I predict the next round of miners coming out of China will be significantly cheaper than the last round. I know that already the 820GH Avalon machine is down to 1900$ delivered, so am expecting the A1 boxes to drop accordingly and for newer 1.2/1.6/2 TH machines to be out sooner rather than later.

Yup, except now they can claim all of the bad boards as damaged in shipment and get reimbursed by the shipping co./insurance, All the while mining on the equipment they should have sent.

Brilliant.