The PA45 is only $117 new at B&H. Strangley, it's out of stock, and backordered. Wonder what I can get for my 545?
Jason, look for a Polaroid 550 holder. Its the one for 4x5 pack film. Back before the Dreaded Announcement, they were going for a about $50. Lord knows what they are now. Maybe $100, maybe zip squat zilch.