perhaps off topic, but these are going for around 699 now...i have the ability to get one in 5 days, wondering if scrypt is still profitable for say...next 69 days?  that's what it would take to break even on one of these.

I know BTC is unprofitable at the moment to mine

also, do you really need a rPi to run these, or can you just usb both to your pc, and does each board need a power supply or only one?

edit:  I read a few pages back, looks like just a psu and usb cables.  still wondering if 699...~1 btc is a good price and if it is still profitable