Because most of these are also required for travelling within Japan I sometimes just don't bother asking for a refund.
I've observed the same in Germany. I think these pessimistic estimates are on purpose, to convince unknowing customers to subscribe to Prime because of the better estimates.
Tangentially, takkyuubin is actually a trademark by Yamato, and the Ghibli movie, Majou no takkyuubin was actually sponsored by Yamato, and is one of the reasons there is a black cat in the movie (their emblem). The generic term is takuhaibin (宅配便).
Ahhhh. I've seen Ta-q-bin which obviously seems trademarked, but not realized takkyuubin vs takuhaibin.
Delivery in Japan boggles my mind to be honest, I'd love to get an account of their cost structures - the logistics behind making this scale at the existing price point must be amazing and should probably be studied extensively in the west.