Originally Posted by austriaka
Besides you should check all Addons you are offering with your package for copyright and license and make sure that appropriate credit is given.
Attention: if there is no GNU General Public License attached to an Addon, it does not mean that it is completely free for (ab)use, but contrariwise the license is restricted to "all right reserved". So better ask the addon authors if it is ok to offer their work in your package. As far as I can see from your website it concerns at least Dwilkinsjr for his Auto-Resize-Addon, Jaywilliams for the Adobe Lightroom Plugin and Dennis for the Google Map Addon.
Other than that the paypal addon sounds vaguely familiar to the buy from paypal addon/hack by RobbieMc. You also mentioned you have 50 custom templates. I assume, since there is no credit list you wrote them all yourself. I'm wondering how long this took? If you didn't write them all yourself I suggest you contact the original authors regarding the copyright and licenses.
I'm not sure if everyone would be happy about this the way it is now.