Item Part # Price HP R27 InkRx Brand HP #27 $12.50 HP R56 InkRx Brand HP #56 $16.50 HP R28 InkRx Brand HP #28 $17.50 HP27 Compatible Brand HP #27 $17.50 27AN HP #27 OEM $19.85 56 HP #56 OEM $19.99 28 HP #28 OEM $21.99 HP R57 InkRx Brand HP #57 $22.00 HP28 Compatible Brand HP #28 $23.00 58 HP #58 OEM $24.75 HP57C Compatible Brand HP #57 $30.00 57 HP #57 OEM $34.84