Toner cartridges are a cinch to refil compared with modern ink cartridges. All you have to do is go to or call a decent toner manufacturer, tell them what sort of laser printer you are using, and they can send you all the toner you can use for a very low price. When the drum goes south, it is another question as they are expensive.

There are companies that sell inkjet ink in the various colors you need, but the printer companies are getting cagier and making their cartridges more difficult to refill, or at least to refill without leaking all over the place. The 500 series Ink Jet printers were easle ruy to find refill kits for, and accomplish the refill. Place the cartridhe on a firm surface, drive the round seal into the cartridge with the Bic ball point pen (supplied) shoot the ink into the cartridge with the filler/container supplied, and cap it off with the reusabbber plug and you were done.

Dave