I believe that is shipped (I didn't buy it and you have to log in to finish up the purchase), but Amazon has never been that cheap. It may be shipped from the UK (though all prices were in USD), but shipping is free and it's tracked. Probably take a week or so to arrive.
Anyway https://www.thehut.com/blu-ray/harry-potter-8-film-4k-ultra-hd-box-set/11540504.html
Anyway https://www.thehut.com/blu-ray/harry-potter-8-film-4k-ultra-hd-box-set/11540504.html