Having 2 kids who are on the computer all the time and are forever printing things off, we go through a lot of ink. We have learned over the years to order our ink on line, instead of going to the local computer store to buy it. We've ordered from a site that supplies every kind of printer ink that you might need and have passed the link around to all of our friends who go through ink like we do. One of the brands that you can order is Samsung SCX-4216D3 Toner Cartridge, at a great price and shipping costs won't break the bank, you can't go wrong with them. We usually get enough to last us about 6 months, so we don't worry about running out all the time. With a son in Jr. High who uses the computer and printer for most of his projects, you have to go with the best deal you can find and we've found it!