Driving in Germany with LHD cars, I once owned a Land Rover Series II in RHD. It was a pain in the §$%&/ to drive. I will probably never again buy a car with the wheel "at the wrong side" for the country.
For this reason probably, RHD cars in Germany are relatively cheap. It might be worth looking at German internet offers like on autoscout24.de or mobile.de for RHD cars.
Here, conversions are not really appreciated, because some conversions are of lousy craftmanship. Doing it properly is a major job on most cars.