hp has a new ink rewards program for specific printers, mainly all-in-ones. When you purchase a new printer you have the option of signing up (for a monthly fee) for ink being shipped to you as it runs out. Your computer is linked to hp website and based on the number of pages you print, they'll send you cartridges immediately.
https://instantink.hpconnected.com/us/en

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The fee might be like some of their software. Once installed it can be extremely difficult to get rid of all of it.
There is even some in Linux now.