High cost is a perpetual problem with toner. Cost per ounce is greater than gold. It would be nice if HP would include controls for toner lay-down density. Sometimes images are too black. Maybe that is an editing problem for images. Cartridge replacement is slick. Printers have good engineering.
Nursing printers is something I no longer wish to do, low-cost printers are time hogs. Our HP M477 has been great. The drivers are sold and the high yield cartridges are exactly that. The last black cartridge lasted 13 months for our 4-person office.
I bought this after Christmas when our original cartridge was depleted. I bought a high yield cartridge. They're not cheap but cheaper per page this way. Excellent information on tracking.