We regret buying our HP envy 5055 and a bunch of these cartridges. We use this for simple text printing, with most of our pages having small amounts of b&w text. The black and white cartridges last for 30 to 35 pages. We just had one make it to 39 pages, which is a record.
The printer software constantly wants you to sign up for "Hp Instant ink" so you automatically have new cartridges sent to you when you run out. Awful product experience from HP. The cost is annoying but what is more annoying is the constant inconvenience of running out of ink and the feeling that the product constantly pushes you towards their ink subscription service.
Recommend avoiding printers that use these cartridges.