Don't forget BeagleBone Black for ~$45, with a 1GHz Cortex-A8 application CPU and two additional independent 200MHz control MCUs.
The BBB is a pretty rockin' little board. Really between the Arduino's ability to have applications extremely cost reduced and the full OS power of the BBB, the RPi has been squeezed out of my stable of solutions for small/embedded system applications.
Mouser Electronics in Germany are the only place I could find them listed today. They're offering them at $77: http://d.pr/b2j8
I have one galileo for sale today ask if you are interested.