Firstly, it doesn’t take long for the running costs of your printer to outweigh the price you paid for it. Secondly replacing ink is an expensive exercise, especially if you buy the manufacturer’s brand of cartridges. So you can definitely save a fair bit of money by buying generic, or compatible, ink cartridges. However if you need the highest possible print quality, you probably should stick with genuine ink cartridges as they tend to perform a bit better. But for general document printing, generic compatible cartridges work pretty well – and it’s hard to argue with the cost savings.