I have disabled the sale of the Mastering ArchiMate II PDF (and the Bundle), while I update the site and the sales system for Mastering ArchiMate III and send a free update to those eligible.
Note, there has been some confusion about if you have to do something to get the free or discounted Mastering ArchiMate III PDF. The answer is no. The mailing earlier this week said that if you had bought not paying through the website (but paying me directly, e.g. to buy a physical/PDF bundle) you had to, but I think I can solve that too. This means that everyone who has ever paid for Mastering ArchiMate will automatically get what he or she is entitled to. It will just take a bit of time, for which I hope you can have some understanding.