Re: Motherf***ers. I strongly doubt this is the only HP that has done this.
> The obvious question, from the point of view of "the consumer experience" is why don't they sell these bigger tanks in the first place?
Indeed. They appear to have gotten smaller since I got my EPSON R800 around 10 years ago - that takes 13ml cartridges (550 page rating, £15), and manages around 80 A4 photos before needing replacing. These days, it seems "standard capacity" is around 4-6ml (250 page rating, £10) and "high capacity" is around 10-14ml (500 page rating, £15).
In comparison, I've also got a Brother MFC-L2730 laser, and that seems to have "infinite toner" - I've printed around 400 A4 pages of text (one-and-a-half 250 page trays), and I'm only 20% of the way through the starter toner cartridge. The replacement 3000 page long-life cartridge is a relatively reasonable £55 too ...