I'm not sure if you are correct, though. From the FA:
"Bitcoins are really hard to get your hands on if you want to get them in large quantities," he told the BBC when asked why he decided to accept the currency for his home. "I have a couple projects that I want to get started, and they will take a lot of Bitcoins."
So it sure sound like he will accept at least quite a large part in Bitcoins. The article states that the priced asked for currently equal about 5300 Bitcoin.