The replacement toner cartridge was delivered promptly and in a sturdy box, old cartridge was easy to return, and the cartridges were easy to change out....but the toner was EXTREMELY expensive (HP should be more forthcoming about this when selling their printers)....
A perfect fit, just open the package and drop the new toner cartridge into the slot that the old one came out of. This is standard capacity and it will last a couple of years based on the the rate I print and on the estimated pages that the printer status gave back. It worked flawlessly from the first page I printed so good quality straight out of the box, no need to print a test page first.