Has google decided to stop selling things?

So I was checking to see how much tax+shipping would cost on a Nexus 4. Both models are sold out.

I check the Nexus 10 to see how it's doing. Both sold out.

Nexus 7 16GB? Sold out.

What's going on at google? Do they not want us to buy their hardware? Surely they have enough info. to be able to predict demand right before the holidays.

Are they trying to limit the amount of units they sell?