Auto Raise

I would be interested to know if there are any manufacturers, similar to those in the lower case, who offer kits for a raise? But I think less of off-road vehicles or SUVs but of “very normal” cars. The background is that my parents (both 75) don’t get into deep cars as well. That’s why they bought a Kia Picanto 2 years ago, which is already a bit higher (and also more handy, with automatic, many more convenient). In the meantime they prefer to drive with me, because my matrix is still a bit higher and you can sit in with normal-angled legs, but I think it’s better if they use their own car. What could I do or where do I have to look to find a corresponding elevation (which, by the way, would also interest me in the matrix, too at least to the HA, because it often hangs in the “knees” because of Gas system, AHK and loading). Does anyone have a price idea of what would cost such a thing? What does everything have to be done? Is the exchange from the springs enough or would there be greater constructive effort necessary? Thanks and Gruss GM