It's also possible to buy replacement chips - I discovered. I've been loading non-OEM toner into my HP colorLaser for years. A couple declared themselves almost empty immediately installed, so back to the supplier with a bleat. "Sorry" came the reply, "what do they weigh?" (Huh? anyway, I duly weighed and reported.) "They're full. We'll send you new chips; instal them this way."
Which I did and got the usual 3k pages out of 'em. Subsequently found that cheap-as chips for several carts available on Ebay...