Yarn Over Hook
I am going to tell you this I hate to be a jerk. But it is illegal for you to sell those templates they are free and under the gnu guidlines. You can however sell your work that you have put into them, you just cant sell the template. that has to be noted in there somewhere. the copyright holder can nail you for everypenny you have.
Don't worry man, I have given the okay to support the project as a 3rd party.
As long as SazCart is not distributed by any other sites, it is okay to sell themes and add-ons that have been developed by that third party.
After all people/businesses like Yarn Over Hook only support the project and give it more looks.
Tony~!