Dialyn, I hope this okay because I couldn't find another way to contact you and answer your question plus others out there may well be wondering the same thing -
I love your scripts and would like to buy a couple, but I don't understand the MtA license requirements. Does that come with the purchase? Is that something one has to buy separately? It isn't very clear on the site but it does say you can't buy the scripts without having one. Could you point me to an area with a clear explanation of what the requirement is and how much it costs? You are very talented and I enjoy your creations very much. I guess if I can't buy the scripts because I don't have the license, I will simply admire what you do from your blog.
There is an explanation of the license system here MtA Licences
To get a license number simply email Mis at email@example.com Mis is the owner of MtA and can answer any other questions you may have.