Totally not the answer but HP do a thing called instant ink which is basically pay-as-you-go, so far it’s working great for me on the home printer. It’ll work out some ridiculous amount cheaper than buying cartridges for my old canon
We bought a new HP in the sales – got 9 months free ink with it, worth more than the printer price, and less than one full set of replacement cartridges for the old printer… And now £5.99 a month for ink.
Look up CISS systems for your printer. Ive got an old Epson XP-323 printer with a CISS kit fitted and its been great for years. Buy my ink from Wilkos now to top it up. I’ve got kids mind so they hammer it for homework.