Bonjour Claudine,
I’m afraid I don’t think it’s possible to purchase the Studio Pro version any more.
It’s not being maintained & developed any more and so remains a 32bit app. Which means that it may not run correctly now on some more recent 64bit operating systems.
If you would still like to get AR6 for someone else, it is currently on Sale with 50% off at the moment.
Maker Of Replica Macoys
Techie Stuff:
ArtRage 6.1.1 ~ 15" Macbook Pro ~ macOS 10.15.7 ~ 4 Core i7 3.1GHz CPU ~ 16GB RAM ~ Wacom Intuos4 M