For my Mamiya RZ67 I got one of these old polaroid backs, but I made the mistake of not checking if there are still films available. What I read so far is that it takes Fuji FP100c (and similar) Polaroid films, however they are no longer manufactured and ridiculously expensive (something like >$100 for one pack...).
Are there any modern remakes available that the Polaroid back will eat? Like the Polaroid 600 films? I found already modern backs that eat Instax films too, however I'm curious if I can use the Polaroid back or should sell it again.