It's also supposed to be at some T-Mobile stores. I hear it's quite a bit more expensive there than at the Play store, though (assuming you want it unsubsidized, etc.).
I've had mine for just over a month now, and so far I'm thrilled with it. I was initially skeptical of the lack of SD card slot, but so far it's not a problem for me like it would be on a tablet. I don't put video files on it, and I use my nooks for most of my ereading, so I only have a few books on it at any given point. I have all of the apps I'm likely to need, unless I delve more into mobile gaming, and I've got 10 GB free still, so I'm more than content.