And US$7k was for the body alone! Once you added a grip, optical viewfinder, and roll film back you were over 10k, and after adding 3 cammed lenses you were likely well over 12k or more. A wonderful system, but very expensive. This was a niche product for the lucky few.
Older versions of this MF system were more widely used (for example as press cameras) in the 50's and 60's, and so 50 or 60 year old MF Technikas can be found for a reasonable cost today.