I do think that this being a villain, and a prequel character, puts him in a slightly different fan base than Luke, Leia, Han, Obi-Wan, and Luke/Yoda. 7 of the 8 previous PFs have been from the OT. I can imagine a PT fan who couldn't afford Grievous wanting Maul to be their first purchase and wanting the exclusive for only $20 more. Many younger fans got into Star Wars through the prequels and have a love for Maul that will get them to pull the trigger in a way that the previous OT figures didn't.
I definitely understand the frustration of such a collector and I hope that there will indeed be some available at noon for the folks who wanted exclusive Maul to be their first Star Wars PF.