I have 2 Ricohs. I bought my KR-5 new in 1980 I believe, for $99.99 at Fox Photo ( a blast from the past ) And one thing is certain, it is a tough camera !! I bought it to take photos of fish, I am an avid fisherman, but practice catch and release, so never have physical "evidence" of my catches,
The KR-5 has been...dropped in the Meramec river, dropped on an asphalt driveway, and was in a plastic bag on the bottom of a boat, that was NOT water tight, I picked up the camera, and water literally poured out of it.... but, it still works fine, I have never done any kind of work to it, it has original seals, and no light leaks. Basically, it is a K1000 clone, but only shoots up to 1/500 second.
I also have a KR-5 Super that my pop found at goodwill for $6, and it works well too, but I have only shot with it a few times, it is just a little fancier model of the KR-5, with 1/1000 sec, and a timer, and I believe DOF preview also.
Here's my KR-5 with original 55mm F2.2