I'm getting up in age and I always wanted one but could never afford one. So I settled for a Mamiya 1000s. These days the 500 C/M is going for around $1000 on ebay with 80mm lens. However I'm wondering about the age of those cameras. The earliest models came out in the late 1950's ! I'm wondering if I can still get parts for it, or will it wind up as a very expensive paper-weight.