There has been quite a lot of interest around the Nexus 10 since it was released and, expectedly, it sold out in just a few days. Amazingly, Google was able to get the 16GB version of their new 10 inch Nexus back in stock just a few days after it went out, but for those people that are more interested in the 32GB version, that option is still sold out for the time being.
There you have it folks, if you want a 16GB Nexus 10, get one soon before it sells out again.

Get one: Play Store