The WRR has been discontinued around the world, so you can no longer get a new one from anywhere (apart from 2020 leftovers still sitting in dealerships).
The way I understand it, WRR was pulled from the European market because sales there were poor due to the WRF being street legal there, so why would anyone buy a heavier less powerful bike from the same company? In the US, WRF are not street legal, so WRR was not competing with them for sales.