So you need to purchase this license only, if you intend to sell your art work on "Print On Demand" sites.
By purchasing this license you can use all the kits you have already purchased and the kits you are going to purchase, to create works to sell on "Print On Demand" sites.
This license does not allow you to create content with my images (whole or any parts of them, as is or altered form) to new kits, collage sheets, DVDs or any other kind of supplies.
My email address is email@example.com.
If you have any concerns, not sure about how this applies to you, comments or questions, feel free to contact me.
(The only exception to this is free content created for Sebastian Michaels's students, which can be sold at ArtBoja without any extended license.)