New $149 NetBSD Single Board Computer Port
An Anonymous NetBSD User writes "NetBSD now supports a new ARM board, the Technologic Systems TS-7200. The TS-7200 is a low cost ($149!) mass produced embedded single board computer that runs on less than 2 watts of power."
Here are some ARM based boards to compare:
Microcontrollershop.com
Here is a similar Atmel board but this is only 8 bit and $153. Atmel Ethernut Board
8MB or 16MB flash with 32MB ram on a 32 bit processor is a good deal in the world of small low powr computers. (but still expensive compared to x86 desktop)