Just to be clear here, I am quite happy with @jochenabitz and the other template project sellers using my stacks.
The way I view it is that they are not reselling my free stacks but are selling their designs and ideas.
If you think about it, it is no different from a website developer charging their client for making a site when using my free stacks (and plenty of them do that and never donate) .
I know that many people see these templates are profiteering but really we should appreciate the novice users position who I know have found them an invaluable starting point.
Just my opinion....