I actually offered to buy my mother a printer with what I considered a more sensible ink replacement situation but she asked for, received and had been very happy with, a printer with the HP Instant Ink subscription. I was astonished, but she's not an idiot, and she doesn't have any reason to lie to me.

She's retired but she does a lot of arts and crafts stuff and seems to print a fair amount most months, and she hates having to drive somewhere to buy ink when you run out, so I guess this is more convenient.