My wife started her PhD program a few years ago and printed nearly all of her resources on our inkjet printer at the time - only to recycle all of it after the class was completed. We were spending ridiculous amounts of money and constantly going out to buy the darn cartridges. I don’t know why, but I had completely forgotten about laser printers, then one day I suddenly remembered from my childhood school days that everyone used laser printers, did some research, and bought one. The cost was more than triple that of a decent inkjet, but nearly three years later, and she has only had to buy maybe two toner cartridges and the darn thing is extremely reliable. Personally I wish she didn’t have to print so much, but it helps her quickly annotate, locate, and visualize large amounts of literature.