Re: Block Erupter Prisma (>=1.4 T/device, 0.75-0.78 W/G, <1 BTC/T, October Shipping)
Based on static conditions - 300 Ph/s network hash rate, 0.1 USD/kWh, $500 USD/BTC and immediate mining start, AM's new Prisma overtakes the S3+ and closes the gap on the SP35:
I'll leave you to your own estimations with regards to changes in BTC price, changes in difficulty and pre-order waiting times but I will remind you that Prismas will be shipping a full month at least before SP35s and there's no availability date regarding S3+ B10s or S4s. A full Prisma set would make 1,764 USD (after power costs) in 30 days under the static conditions.
I'll leave you to your own estimations with regards to changes in BTC price, changes in difficulty and pre-order waiting times but I will remind you that Prismas will be shipping a full month at least before SP35s and there's no availability date regarding S3+ B10s or S4s. A full Prisma set would make 1,764 USD (after power costs) in 30 days under the static conditions.
All of the highlighted statements are false. The conditions aren't static and there is no immediate mining start. Instead of throwing with useless and fictional numbers like $1,764 USD why not use your energy for some realistic projections. By the time the Prisma miners will ship difficulty will jump 2 times. The next jump is in just 3 days and it's projected to ~19%. For the sake of the argument let's say the next one will be ~15%. That means that the $1,764 will transform to a merely $1,200 USD.
I hope that everyone else notices jimmothy's and your biased projections as AM shareholders!
Here's a question for you RoadStress. Given the 1 month head start for the Prisma, how long would it take for the SP35 to overtake the Prisma in total mining profits? Show you're working as well. Oh yeah, and where's that 0.1 BTC you said you were going to send me. 
Sure. Under static conditions (since you like to use it) 2xSP35 will not overtake Prisma in monthly mining profits, but it will be the same as 10xAM Prisma miners. The 2xSP35 owner will pay less for them and start mining one month later. The 10xAM Prisma owner will start mining 1 month earlier, but in that one month of head start he will only regain the difference of price compared to the 2xSP35 miners (~1200$). After the first month both solutions will have the same profit per month, except that the AM Prisma owner will need a bigger electricity circuit than the SP35 owner.
As for your 0.1 BTC I will reply you in the dedicated thread, no need to be so desperate.
How do you figure the SP35s are cheaper? The price on 10 Prismas is 14.9BTC or 5960. To that you need to add 5*($45+$60+$3.50*8 + $10) for a DPS-2000BB/breakout/cables/shipping = $665
That's $6625 for 10 Prismas, which unless the SP35's have had a large price drop recently is still cheaper than two of those.