So, let me get this straight....

in return for bare chips, delivered the same time as the first fully operational hardware boxes, we are to pay 0.85BTC per chip (25GH). At $150/BTC, that's $127.50 per 25 GH, or $5.1/GH. No guarantee that all 32 engines are working on every chip purchased, at least so far as I can see. Mining dashboard says that difficulty would have to stay below an increase of 80% per month to reach 0-ROI, some time in APRIL, so the chip costs eat up the first 90 days income, even if power costs are ZERO.

At these prices, I think this is a very expensive hobby.

Kinda hard to see how anyone would make a successful business out of it, unless chip prices were dropped into the $3-4/GH range, and even then a 2 week slip in delivery destroys all the expected profit for the life of the product, and then some.

Ah, well - I've had more expensive hobbies, I suppose.