I think scalpers are going to be disappointed. It lasted about 20 hours on Amazon and you can still get it on Namco's store and some other places.
I think this is where you are wrong, If the game got the much better sale /review and from my perspective it suppose to be a niche title. Then the value of the collector's will explode a few weeks after release. I'm pretty sure this game will be a even more success then the first game, so people who never thought they want the collector will look for them. Check Black Box edition of Nier: Automata, it took a week to sale, did you see the sold price right now ? This is purely speculation, but on this one i'm pretty sure this will happen. I can't imagine also how the collector for the first game will also explode.