Media One offers the best prices on HP 5000/5500 and HP Z6100 inks in North America.

Dye Based Value Pack: Ink, Printhead, and Cleaner (No. 81) Dye Based Value Pack Ink Printhead and Cleaner for HP-5000/5500 (No. 81)... more details... Price: $275.00 sku: C4990-4995A

UV Value Pack: Ink, Printhead, and Cleaner (No. 83) UV Value Pack Ink Printhead and Cleaner for HP-5000/5500 (No. 83)... more details... Price: $289.00 sku: C5000-5005A