Those aren't deactivated grenades, they are reproduction grenade bodies. They are worth much less than deactivated grenades as the are just plain metal and do not have the internal fragmentation matrix. The one on the left has a practice grenade fuze, likely the M228. The centre one looks like it has a reproduction fuze. If it doesn't have a working mouse trap mechanism it would be worth less than one that does. The one on the right looks like a practice fuze with a green fly off lever rather than the regular blue one. These are common finds in many surplus stores.