I guess you did not read my reply the issue here is grabbing post counts from 25 different integrations if this was merely a standalone app not integrated with anything we could code anything we wish.
If your using the application with
vb which of course has an entire posting level advancement feature then simply as noted in my reply set your classifieds usergroup permissions according to what you want.
I can only think of like 2 maybe 3 products we integrate with that have such a feature.