No disrespect intended AM, but I don’t think that is accurate. There are actually two amendments available; one is freely available, yes, but this AL has been available from this seller for 15 years from memory; that is about when a friend of mine bought his copy.

It is undoubtedly true that a lot of sellers take pdfs from other people and sell them; Somebody sells a disk of all of my free Vampire manuals (most of which I have scanned myself) for example. 

Just wanting to point it out because I believe in this case this is the origin of this version.