Hokay. Basically, they're just original HP cartridges that people have used and then returned to the store for the 3-dollars off coupons. They trade these cartridges in en masse, clean them up, refill them with ink and repackage them for sale. They usually work as well as the original HP brand carts, but beware... if one of the cartridges fails or causes damage to your printer, your warranty is nullified as the cartridges are not original HP equipment.
If your printer is an older model that isn't covered under warranty, there's no sense in not using the cheap knockoff brands, or even just buying a refilling kit and refilling your own cartridges.
24 other Office Depot coupons and deals also available for August 2017.30% off your qualifying $30 purchase of back-to-school items, tech services and print services. exclusions apply.X32 Get.Buy 2, Get 1 Free Office Depot Brand Ink.