Charging certain usergroups per thread in a certain forum

[browsehosts]

I know that many people would find this useful:

Charging certain usergroups per thread in a certain forum.

Example: People who want to sell cars are "Car sellers" ( a usergroup ), everytime they want to sell in the "Cars for Sale" section, they get charged $5 for each new thread.

Is there anyway to do this currently?

And can we get this feature added in the admin cp as a simple step?