We have already discussed this topic above. The device will have to compete with many cameras in the second hand market. So, the device should be cheaper than cost of some inexpensive (non-collection) camera in the secondary market, plus the cost of servicing this old camera, plus a fee for guaranteeing trouble-free operation of the camera. As of 2023, this amount appears to me in the amount of €370 to €440.
I believe that it is necessary to produce it in metal, to achieve the durability of the camera. It is possible to produce a cheaper version of the camera, with replaced metal parts with plastic ones.