The HP ENVY 7855 has a bad cartridge system. Since there’s only one color cartridge, you’ll have to change it every time any of the colors run out, which is disappointing for a photo printer. The standard replacement cartridges don’t last very long, but there are high yield cartridges available which should help improve the yield a bit. Third-party cartridges also work, but this could void its warranty.
It’s worth noting that we had multiple issues printing with our unit, both during the initial set-up and after only two weeks without use. Multiple cleaning cycles were required each time before it would print properly.