I'm thinking that of 146 pounds, 15 pounds is plastic.

I normally just rip the plastic off my printers, cut any exposed wire, grab the boards and throw the rest in shred (unless a motor is easily accessible). If I did that with the units I would be getting somewhere around $15 each. If so, not bad granting they gave me a couple computers, 7 smaller printers and a box of cat-5 cable as well.

Still, it's a lot of work for around $15 per unit.