Exactly, a true set of proper 'forged" wheels would certainly be expensive.
I think they are getting fancy with the marketing, but the finish of them make me think that they are actually a cast billet.
Which is then put on a spinning lathe, and then they forcible extrude/spin the heated billet back into the rim shape, like a pottery wheel
This seems to be what many manufacturers call "flow forged"
Video below shows wheels being made in which the initial "puck" is made from cast alloy. This Id wager Holdens "Forged" wheels are made, given their surface finishes look identical.
The forming is above at 8:40
Whereas on the below video, you can see the difference in a true "Forged" wheel
Between 3:00 and 5:30
Either way, fascinating videos!
Always love manufacturing
Harkens back to when our economy was more than
a.) A mine,
b.) A Farm,
c.) A University
d.) A Ponzi scheme housing market