Kind of wild that even an option literally phrased in a way indicating you want to immediately give them money requires clicking again to even start making a selection (without even getting into the fact that the actual specs are behind a link that makes it sound like it's for when you've already made up your mind to buy it).
if you click "Buy Now" and then...click "Buy Now" again, that takes you to the actual pricing. $500 for 1TB, or 4TB for $800.