Remanufactured Compatible Black Inkjet Cartridge Replaces HP 51645A HP51645A-GReg. Price: $ 17.90Sale Price: $ 13.90 Original HP 51645A Black Ink Cartridge - (No. 45) HP51645A-OEMReg. Price: $ 37.99Sale Price: $ 34.99 Remanufactured Cyan Inkjet Cartridge Replaces HP 51640C HP51640C-GReg. Price: $ 21.90Sale Price: $ 17.90 Remanufactured Magenta Inkjet Cartridge Replaces HP 51640M HP51640M-GReg. Price: $ 21.90Sale Price: $ 17.90 Remanufactured Yellow Inkjet Cartridge Replaces HP 51640Y HP51640Y-GReg. Price: $ 21.90Sale Price: $ 17.90