@ross my experience differs. I’ve had to buy toner for my brother laser printer from time to time. That’s because I bought it 9 years ago and it still works, even though I feed it the cheapest toner I can find on eBay or Amazon.
Unlike all of the inkjets I bought before it, the printer works fine even if I go months without printing. Toner doesn’t dry out and plug the non-existent toner nozzles if you ignore it for too long.