Is the HP 63XL/65XL combined ink cartridge worth it?

Here's the bit that actually matters: HP has combined the 63 and 65 cartridge lines into one part. Those used to be separate products because different printer generations wired their cartridge contacts and ink formulations slightly differently, so a 65 wouldn't physically work in a 63 slot and vice versa. This cartridge is built to satisfy both sets of contacts and both ink chemistries at once, so instead of matching a number, you're matching your printer model, which is the thing you actually know off the top of your head. That's the whole trick: it collapses two buying decisions into one. On top of that, it's a high-yield cartridge, roughly 300 pages, meaning it's built with more ink packed into the same cartridge shell, so the tray you print your kid's school forms or the odd boarding pass on doesn't need swapping every few weeks. It's still a standard ink cartridge under the hood, not a refillable tank, so the yield and the price scale together the way they always have with HP.