Subscribing.
Just for reference, the rig box is guaranteed to be 50.4Gh @ 2.5Kw. This guarantee is in the form of partial refund.
Also BFL last product ended up be 400% of claimed wattage and 66% of claimed hashing power at 20% higher price. If Rig box follows that same trend it is ~30GH/s @ 10 KW and ~$35K. 
Just for reference, the rig box is guaranteed to be 50.4Gh @ 2.5Kw. This guarantee is in the form of partial refund.
Well the single was "guaranteed" to be 1.05 GH @ 20W. Doesn't say much.
"This guarantee is in the form of partial refund."
BFL to me, "The performance specification of 50.4 gh/s @ 2,500w is guaranteed. Should the delivered performance vary from these figures in a negative way, a pro rated refund is the agreed remedy."
Any follow up on how it will be pro-rated. A 1% reduction in price for a 1% miss in performance = solid. A 1% reduction in price for every 20% missed in performance = not so solid.
Since there are two specs how is the pro-rated refund work for a miss on both.
If power is 20% higher and performance is 20% lower is it a 20% refund, 0.8*0.8 = 36% refund, or 0.2 + 0.2 = 40% refund or none of the above?
Without knowing that and spelled on in contract BFL guarantee is no better than Tommy Boy example. They already released one guaranteed product.
Guaranteed 50 MH/W -nope (and laughable they got this one so wrong)
Guaranteed in 4 to 6 weeks - nope (not even close)
Guaranteed 1.05 GH/s - nope.