How much our these cameras worth - Ricoh KR-5 SUPER II 35mm SLR Camera

Like all non-specialist, non-collectable 35mm bodies, yours is almost worthless, sorry.

There is usually some demand for K-mount models like yours, but the prices are still very low (no more than £10) as a potential purchaser is likely going to need to get the foam light seals replaced, new batteries and will need to spend money on running a few test rolls of film and processing in order to check that the camera still exposes correctly. Although the light seals can wait until after testing, the film, processing and batteries are all a gamble if the camera is no longer functioning correctly. For all these reasons, cameras like yours are often offered free on FreeCycle/Freegle.

If you can prove that your camera has new batteries, light seals and has recently been serviced then it's worth up to around £40 maximum for the body only. US prices will be about 30% lower.