Still too high, even 125 is on the high side now.
Remember that you should subtract 1.5 BTC from the price every day as that is what this machine would be mining.
That is not a proper way to value a mining rig.
Depreciation comes from difficulty adjustments, not from how many coins it has already mined. If I were in the market to buy a miner at a lowball price, I might use the same argument.
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
Nice try though.
Yes but difficulty increases at regular, predictable intervals and it is fairly straightforward to estimate how much it is going to increase from the units that have been pre-ordered and are shipping now.
My point is simply: every day you wait, the value of your miner goes down! And by quite a significant amount.
The money a miner a makes on the tail end of its life, when difficulty is in the hundreds of millions and it is barely covering the cost of it's electricity is negligible compared to how much it will mine in a single day right now.