They practically give the printer away and make it up by over charging you when you need a new cartridge. Compatible cartridges WILL NOT void your printers warranty. The following information is from US LAW that allows end users to utilize third party inks and cartridges. We guarantee you will get at least the same number of printed pages from our Inkjet cartridges as you will get from an OEM Inkjet cartridge. Our customers are reporting many, many more pages of print per cartridge over their OEM Inkjet cartridges.
Some companies sell refill kits that are said to refill any cartridge.
Each cartridge has different properties and requires the ink to be of a special chemical formulation for it to function correctly. For the most part, inks are not interchangeable between different cartridges. Each ink is specially formulated to mach the ink of the OEM and will work in your printer every time. Our inks are specifically formulated for each individual model printer. You should not see a difference in the quality from our ink and the OEM ink.