Finally on sale in the US, sells out in a few hours! http://www.cnn.com/2013/04/02/tech/innovation/raspberry-pi-sale/ and: http://www.cnn.com/2012/12/21/tech/innovation/raspberry-pi-computer-upton/index.html
You should mention that the model mentioned for sale is the "A" model with 256MB of RAM and no Ethernet. AFAIK, the "B" model was already available.
The A model is still good for a LOT of things. I love these little fellas and have put several to various uses so far.