I don't understand why they stopped producing the SP10 Dawson, it would still sell like crazy.

SP10 'Hammer' - 7.5 GH/s; 0.58 W/GH/s ; Costs sub $0.90 GH/s for the chips?"
SP30 'Rockerbox' - 200 GH/s; "
The first ASIC company to break the 0.5 W/GHs barrier" Costs sub $0.50 GH/s for the chips?
SPXX 'PickAxe' - XXX GH/s; 0.34 W/GHs; Costs sub $0.40 GH/s for the chips?
SPXX '
Mattock' - XXX GH/s; 0.10 W/Ghs; Costs sub $0.20 GH/s for the chips.
Basically this is a war on. It is to develop the cheapest most efficient chips and there are only two real players Spondoolies versus BitFury with the capabilities to do this level of design.
Spondoolies is going Nuclear on efficiency and price and hopefully they will continue selling their chips to anyone with the cash / btc.

I think I was pretty close to the costs of the chips if anything higher than actually off the factory floor prices.