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White Sky Compatible Refill Ink for HP Printer Black 200ml for Cartridges HP 802, 678, 680, 803, 46, 818, 685, 46, 21, 22, 901, 27, 703, 704, 862, 920, 808, 960 : Amazon.in: Computers & Accessories
How much does ink really cost to manufacturer? What's the usual mark-up for the average ink cartridge? - Quora
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