Did you know that there are videogames made by Vatniks? If you want to check those out (and get a bit of Background Information on some Vatniks) I recommend the Youtube Chanel Warlocracy

According to this Interview from 2021 costs are ultimately expected to be roughly the same. Also it can be argued that having Support and security patches for the Software is more or less required by law if you intend to use it in (German) public Service.