I just got in a pair of robotic mowers and I was wondering if there was anything I should know before I scrap the decks and blades and put the rest in the shred. They had a pair of 12v batteries, each, but other than the possibility of a few mid/low grade boards, I don't see much more potential for even metal value, let alone resale. Am I missing somethung? The local small engine guys don't see many of these and I don't know if I should even bother asking if they will buy.