Amazon with SZHY-ink has the 8-Pack OSIR HP 950XL / 951XL Compatible Ink Printer Replacement Cartridges for $28 - $14 off with coupon code ORF6TA4P [Exp 7/30] = $14 with free shipping on $25+ or with Prime. Works with select HP OfficeJet Pro models (see full list on product page).