By comparison, with a lot of cheap printers, if the yellow runs out, or the holes in the magenta printing jet plug, you need a whole new cyan-yellow-magenta ink-and-jet cartridge -- and the cartridges usually hold very little ink.
This type of ink has excellent darkness range, from very faint gray to very high-contrast black. The color cartridges have great color range. Together, the overall color range is almost as good as a specialty "photo" printer, but the ink doesn't cost nearly as much. While it really looks great on fancy paper, it works well even on cheap paper...