Updated on 02/06/2018. Costco offers $3.40 off on this item, dropping the price to $6.45 price is valid from Feb. 08, 2018 through March 04, 2018. Costco January’s Costco Coupon Book: Feb. 08 – March 04, 2018 Quaker Instant Oatmeal deal is back again. We spotted $3 off on Quaker Instant Oatmeal 52 Count Box at Costco now, bringing the price down to $6.85. […]