This sound indeed very different than what we have discussed in the past. Let me make this clear: despite the fact I released the addons used in this package as GPL I do not waive my rights. The source is free to use and free to modify but still very much copyrighted by me.
Obviously you can make money by reselling programs released under the GPL. One of the other restrictions is that if you make modifications you HAVE to publish them to the world. Still haven't seen that.
And why not give something back to the developers? We spend countless hours providing something free for the community and other people start making money from it.
This, among others, is also the reason I don't release the latest version of the googlemaps addon to the public. I fear when Pixelpost 2.0 has arrived all my plugins will solely exists on either my own server or on the servers of friends.