I did have an identical setup that I was selling on ebay, but they removed my 'buy it now' option when I posted that I had a second rig on bitcointalk.org, so I canceled my eBay auction and will sell both rigs in this forum at a reduced price!!

Both rigs include a Beaglebone Black already fully loaded with Ubuntu and Proxy mining software!
The BBB is set to autostart the mining software (/etc/rc.local and /usr/local/bin startup files configured).

I have been a member of bitcointalk since around July2013 and I am willing to sell using escrow,
so buy safely from me before someone else gets the great deal!!