I have a P45+ with Mamiya mount and Mamiya 645 AF with 2 lenses, The back has over two years of warranty left. I am willing to sell the back for $25,695.00 Complete Kit for $27,000. The back is in mint condition. Always kept in Pelican Case, which is included, much better than the phase case.
About 6,000 actuations, about 4,000 of those were in a clean studio environment. There is still a mount change available.