I've been using this setup for three months now as a hobbyist photographer, very pleased with the results. I've shot about 30 rolls of color and b&w mostly outdoors with natural light.
The rubber surfaces on the bottom side edges flaked off which is fairly common. Missing plastic covering on one of the focusing knobs. No noticeable light leaks from the bellows. Extend via focus knob but there is minor resistance at one spot rotating the wheel. It is very minor any no force is needed to turn.The 90mm worked well for me, there is some dust as you can see in the photo, but didn't greatly impact the images I took then scanned or printed in my darkroom. I don't see any scratches, fungus or seperation. Prism finder with built- in light meter. It does not do auto exposure. I usually use an external light meter for best results. I've had light leaks from the 120 film back, to mitigate I tape the edges. Couldve been due to loading in the sun, having the dark slide out or leaving the film loaded in the back for extended periods of time. Takes an Energizer Battery 4LR44 or can be tested in emergency mode at 1/400 shutter speed. I would say the camera is in fair condition. The item "Mamiya RZ67 pro with 90mm 3.5 Sekor Z lens, Prism Finder and 120 Film Back" is in sale since Monday, August 2, 2021. This item is in the category "Cameras & Photo\Film Photography\Film Cameras". The seller is "ebum" and is located in Minneapolis, Minnesota. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.