I've got a Cairnsmore1 (4 x Spartan-6 XC6SLX150) FPGA board (serial number 62-0821) for sale.
I've been a pride owner of it since 11th of April. It's working perfectly well,
on average hashing away at the rate of 760 Mh/s with genuine Enterpoint bitstream,
BFGMiner 3.0.2 on linux Ubuntu 12.04
Fan hums nearly noiselessly.
All technical details and support materials can be found at:
http://enterpoint.co.uk/products/spartan-6-development-boards/cairnsmore-1/Asking £520 ($800) plus shipping from UK.
Note: PSU is
not included.
The only thing that comes originally with the board is USB cable.