There is a site. I found out about it on youtube, selling 4K discs of 4k77, 4k80 and 4k83. Not going to link. It seriously is bad for the community for people to do this. The Blu-Ray boots were bad enough but offering 4K and not just 4K but HDR copies as well, awful.

Edit: it’s not through youtube obviously it’s a webstore that sells bootlegs. They even call these despecialized when they are 4k versions of the 4k77, 4k80 and 4k83. And Harmy isn’t the one who did those they can’t even get basic facts right.