For reference, at the current cost of the Bitmain S7 (roughly 1.6 BTC/TH), the SP50's hashrate would cost 181.29 BTC (~$41,700). The S7 is not capable of breaking even at that price before the halving, and does not include PSUs, so it isn't exactly an apples-to-apples comparison. What would be a better comparison, is against the SP20, new cost, when it was launched. The SP20 was 0.87 BTC/TH (ironically cheaper than the S7, despite launching when difficulty was -way- lower). So at SP20 costs, the SP50 would be only 96.75 BTC, or ~$22,252.

So if we estimate a price of 100 BTC for the rig, and if we estimate a 5% difficulty rise on average (currently lower, likely will be much higher as S7s and SP50s hit the market), at 8 cents per kWh and on a 0% fee pool, we have a potential break-even day of March 25th in what I can only call super-ideal-circumstances.

Now, if Spondoolies prices this more in-line with current hardware, and it costs upward of 125 BTC to order, it will no longer break-even before the halving, and since some people have estimated its price around $40k, at that point the device does not break-even and maintains a negative ROI.

What we are looking at, is a fundamental shift in mining strategy, because even at industrial scale (which is what an 11U 180V miner is), operators must be very careful with their capital investments and on-going costs to ensure everything remains profitable, or reaches a positive ROI before June of 2016. Likewise, even if the exchange rate doubles on the day of the halving, that still doesn't help because at these expenses, you can't afford to be an irrational miner. If you are looking to light up 1 PH of hardware today, you have 2 choices:

1) If you think Bitcoin's exchange value is going to remain constant at the halving. Pay no more for the hardware than can break-even before the halving, and ensure your operating expenses can stay below your income level after that date.
2) If you think Bitcoin's exchange value is going to go up at the halving. Having capital tied up in non-liquid mining hardware that is so large it has minimal resale opportunities is an irrational move. It would make more sense to  take your investment into Bitcoin directly, and monetize your investment through more traditional means.

But if you're in camp #1, you're not likely to be interested in mining Bitcoin, and you are still sitting on a very expensive asset, which has a lot of operational costs associated with it as well, which you'll have to figure out how to sell later to recoup your costs (or consider them truly sunk once it is no longer efficient enough to mine with at your power costs).

So, unless  this is 100 BTC or less, it just doesn't seem rational to buy it. As it stands, as a "prosumer" miner, I'll put an inquiry in to find out what the MOQ is, but I have existing miners eating up some of my capacity, so I would first have to sell those to free up enough room to run the SP50, or find other individuals who can afford a single rig, but not the MOQ. I can't imagine there are many though, even one miner will be a substantial outlay at 100 BTC, and that's likely far less than Spondoolies wants for it.