This has nothing to do with USD price of bitcoin...
I keep on hearing this logic, but when computing values, the same people turn 180 degree, and point to mtgox conversion rate. Face it : none of the crypto mumbo jumbo has any value unless you can trade them for something tangible - and those tangible things still can only be bought with fiat.
BFL did not create miner by spending btc, but using fiat.
Wrap this around your head.