I'd guess that you won't make much if they're just scanning for scrap value, probably anyone who's going to steal a (relatively) new phone is going to go with the old school ways of getting rid of it - Pawn Shop, Craigslist, EBay, Russian Mafia, etc...
I think this machine is a cool idea though, I tend not to throw out gadgets because it seems like a waste to landfill something that (with a little work) has a lot of recycleable components. If we had one of these machines around, I'd use it just to get clear out a few drawers in the house - even if I didn't make a cent.