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This HP Compatible 950XL + HP 951XL Ink Cartridge Combo Pack drops from $37.95 to $29.95 plus free shipping at Meritline when you use coupon code MLCA30UN at checkout. This was the lowest price we found by $6. The pack contains one cartridge each for black, cyan, magenta, yellow. A list of compatible printers is on the product page. There is no sales tax (except in CA).