Replacements for HP:    
C6614DN (HP 20) -Black
51649A (HP 49) -Color   
Remanufactured Black Ink Cartridge - Replaces HP C6614D
$14.95
HP DeskJet 610 / 612 - Black
Remanufactured Color Ink Cartridge - Replaces HP 51649A
$18.95
HP DeskJet 600 Series - Color
HP Ink