Wow, that's quite a find. Those things weigh a ton though, so freight could be substantial.

The printers share many parts in common with a Canon photocopier of the same era. Back when I worked on them, we had a suitable Canon copier in our office and the copier frequently became an "organ donor" when we had to diagnose a tricky intermittent fault on a LaserWriter Plus. Note that the photocopier toner cartridges will not go in to the LaserWriter though (they are "keyed" to stop this). I think the photosensitive drums are different.

As to what it's worth, I couldn't imagine them having any real commercial value.