I have HP F4210 which is old but trusty and I'm not sure I'll find an ink catridge for it. The catridge is HP 300, don't know if any others fit as well. I checked on the local store for it, somehow they didn't list black ink but they do have 2 kinds of colors, one of is exactly 2 times the price of other, why? Anyway is it worth to buy these catridges or are new printers better now, if so which one? Just need basic scanning and printing like once a month, well my folks need it and no they won't go to pay someone else do it. The other printer we have is Pixma MG5550 which a piece of shit, I think we won't buy any catridges for that one, fck that wireless block that is almost as slow as the trash laptop pops brought from 'murica.