I have used a Lexmark desktop printer with 6000 page demo toner installed. That thing's toner container (which is just a canister) is almost thrice as big than my Samsung's dispenser-integrated 3000 page toner cartridge.

IIRC, that thing is somewhere around office, and we still use its demo toner. It's a low duty device too, but well.

In other words, these devices are still there, but it's the next bigger class with respect to the Samsung printer I have. Also, Samsung has a very nice econoprint mode which injects tiny dots inside the letters which saves 20%-50% depending on the font and content you print, and there's no day and night difference in terms of the print quality between two modes.