Happy Memorial Day! Here are the King Soopers coupon deals for the week of 5/21. Prices listed are valid from 5/21 – 5/27. Match coupons with sale items and save even more on your total grocery bill! King Soopers doubles coupons. Coupons under $0.50 double at face value. Coupons $0.50-$0.99 double up to $1.00. Remember, digital coupons do not double and cannot be combined with manufacturer coupons.