MK802, a new USB thumb drive-sized computer is available for purchase. The mini computer has an AllWinner A10 single-core 1.5Ghz ARM CPU, 512 MB of RAM, a Mali 400 GPU and can play high definition videos.
The mini computer ships with Android 4.0 ICS and just like Cotton Candy, it comes with microUSB and microSD slots as well as WiFi. MK802 also has a full-sized USB port and of course, there's also a HDMI port.
The price is larger than for the Raspberry Pi: $74 (including shipping), but the new mini PC has better hardware. And it's a lot cheaper than Cotton Candy, which does have a dual-core CPU and 1GB of RAM, but it costs $199 plus shipping and furthermore, the pre-orders have been closed for now.
MK802 can be purchased via aliexpress.com (US $74.0)