Correct. HP is the distributor. A new Rodagon G lens would be fairly expensive, and used ones are not common. They are a specialty lens only
for big enlargements, and not really suitable for ordinary work. Some lab
owners preferred Apo-Nikkor process lenses for this kind of thing, but I
don't belive they were ever made in shorter focal lengths ideal for med
format work, and would be about two stops slower in actual use, so need
a stronger light source (which specialty labs had). I had a big color mural
enlarger once, and the damn thing doubled my utility bills.