ink cartridges
When you start refilling your cartridges consider trying out Inksave for a trial period. If satisfied you can download or buy the software to install, about £20.
I have used Inksave for a long time now but apparently it doesn't agree with all printers but the trial period helps. The amount of saving every time you print can be varied, but I adjust for 75% saving for general purposes. Well worth a try.