I used to refill cartridges on my inkjet printers. I had a refill kit. It was pretty easy to do, just inject ink into the hole(s) on top of each cartridge. It only worked a couple refills for each cartridge, but that was ok. i'd buy a new one every now and then and keep refilling. But guess what...the cartridges aren't refillable anymore! No holes to inject the ink into. I dont think they even sell the refill kits anymore. I like canon ink jet printers, I'm on my second one in 11 years. They are workhorses and very inexpensive. Of course the ink is pricey, but they all are.