The cost of the size
Fill scales with the pillow, and so does what you lift.
Nobody warns you about this and it is the one thing people write to us about after a king arrives. A pillow this size holds more of whatever is inside it, so the weight climbs with the fill you chose. In buckwheat that means 15 pounds against 10 for a standard. In kapok it means 3.8 pounds against 2.3.
None of that is a problem while you are asleep, because the pillow is under your head rather than in your hands. It shows up when you change the bed. If you make the bed every morning and you know you will resent a heavy pillow, choose kapok or wool and you will still get the length.
15 lba king in buckwheat, our heaviest
3.8 lba king in kapok, our lightest