Blujay - ni-mh and li-ion are the ones with any real value...you can sell ni-cad to some sellers but shipping might get you if you have a large % of those...li-ion is about $1.10+ per pound and their weight can add up.

You might tey to find a more localized buyer even if tou have to drive to save on shipping..get then to match or get close to pricing offered on here. Weight just can kill your profits on that stuff.

Good luck...