Why do you think they spent a lot of time on the content tab? Being as it was already in the code base in the older versions that pointed to Content Paradise basically all one would need do is change the URL of where to go to point you at content to purchase. That is like 5 minutes work tops. The harder part will be with the store to make sure you get Poser items and not something else

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13