I buy for about $1 each receiver, although some newer ones I pay $2. I can sell newer ones on Ebay for $15-$30 each (some even more) if working. If not, you get a nice board and possibly a 100gb or higher hard drive. Obviously you have to take into account your expenses. Make sure you get the power cords and remotes as well. You may need a special bit for opening up some of those, but you can get it cheap/easy on ebay. For just the boards you can contact a buyer on here and see what they pay. Good luck!