How many people's parents are utilizing a printer to the extent to justify "high use"? What printer manufacturers mean when that comes out is hundreds of pages PER DAY (an office with a common machine). I doubt any home users even approach that. If you're doing 10 a day I'd consider that "high for home" IMO.
That's where I was going, yeah.
~1000+ pages per week would constitute high use. As in, approx 20 ppm, so big it has its own casters, multiple paper tray cassettes, and can collate, staple, sort, etc. "Enterprise class." We need something like that at my office, but upper management won't shell out (especially since our previous ratings book was so awful, worst I've seen in over 10 years, and agencies are bailing)... so we make do with the heftiest floor model discounted discontinued half-off medium duty one we can find.