First try to find a collector - in my experience, I say "good luck" as I had a bunch of these 'bricks' sitting around for several months with no bites.....
The boards are what I would rate as 'peripheral' - not that they don't contain some gold, but they aren't gold/weight ratio of cell phones or other 'telecom' type boards - so they are worth about $2/lb (maybe a bit more if you find the right buyer).