Inks expensive (as always) but also not stable.

Already as inks for inkjet printers are expensive, especially if manufacturers but increasingly they are not stable over time, why buy them? For my part, yellow has turned green after a few weeks. Certainly, I do not print too often but I have never met a similar problem with other brands. Now, I buy compatible inks, less expensive, not so good, however, and above all, I invested in a black and white laser printer, the cost of use is much more interesting.