Review on Inktopia Remanufactured Ink Cartridge Replacement for HP 63 XL 63XL | Compatible with HP OfficeJet 5255 5258 3830 3831 3832 Envy 4512 4516 4520 DeskJet 1112 2130 3633 3634 Printer | 2-Pack Black by Kyle Cross

There are a lot of fakes out there but these guys seem to have found the right combination of quality, cost and packaging options: single cartridges, dual black, dual black with 1 color, 2 black with 2 colors etc. My HP 4650 series works fine and they have updated their chip so more HP printers recognize them. Highly recommended. 1/3 OEM price. The downside is that they can't be refilled in big stores. They only refill original OEM cartridges.