Since you’ve updated your comment, I think the key difference is that most people try to stick to B&W laser printers as those seem to be rock solid. Rather than going for new printers or printers that have an insane sale like a $450 for $150, look for reviews from forums for people who have been using the printer model for years (or join and ask on such forums if you can’t find anything). It sounds like the printer you happened to pick had a known design/manufacturing flaw and whose service life wasn’t up to snuff, which probably explains the huge discount. Remember. Laser printers make money on the printer, not the toner so much. That means if a printer is getting a huge discount, it probably has some kind of problem.