Yes, Americans don't know the exact price of the products in their cart between the 10min they put the items in their cart and when they check out. They know it will be a little more and they mentally budget for it.
But that doesn't have much to do with a price increasing weeks or months after paying for a preorder.
So you can mentally separate the price the vendor charges from taxes imposed by the state when you pick up in the store but not when ordering internationally?
Pretty much all tech purchases are implicitly international. During the last Trump administration we were madly spinning up additional manufacturing capacity in Vietnam, because the full tariffs on China, had they come into effect, would have doubled the retail price of an Oculus headset (which is a US corporation, just as in this scenario)
But that doesn't have much to do with a price increasing weeks or months after paying for a preorder.