Quoted from Whysnow:there is not a single manufacturer out there which offers a non-preorder model for any of the limited games.
While you included Houdini in your list, there is just one model, and there is no initial limit on how many will be made. There are distributors who will put your name on the list without a deposit. And as a reminder, none of that deposit money comes to us. Accordingly, you can wait and get it when it is available. AP is not 'crowd sourcing' this game, likes others have.
Obviously distributors are going to give priority to those on the list and/or who gave deposits. Obviously there are factor relative to 'orders' that impact when and how many a distributor gets as the games start rolling off the lines, so that is why they want to get some money to help validate someone's interest is real. So, for those who know this is a game they want, then putting a little bit down with a distributor makes sense.