Don has an old Epson NX510 printer that he hasn't used in a long time. The ink cartridges are now really expensive. Is it worth trying to get new cartridges? Leo says that many models replace the print head when users get a new cartridge. So it's worth a try. But it's also worth running the unclogging utility and cleaning the print heads. Users really need to print once a week in order to keep the inkjet healthy. If users rarely print, a laser printer is better.