People already own gridseed units and are currently mining with them at these power consumption levels.
I was under the impression this is only being done with non-scrypt coins.
Your impression would have been correct up until about a month or two ago - give or take.
I am not going to post links here to any sellers and give them free advertising, but i'm sure you could easily find them by using google.
The hashrate and power utilization numbers I posted were not pulled out of thin air. They are measured reported rates of actual units.