Here are the weekly deals at Publix, valid 9/15 – 9/21. There are some new Publix digital coupons in the matchup. Publix digital coupons are manufacturer coupons that are loaded from your computer and attached to your phone number; input your phone number at checkout. Each digital coupon can only be used once. If you have not signed up for this program, go to Publix.com and sign up now. Keep in mind, most Publix stores (except Florida and Charlottte Division stores) double coupons worth $0.50 or less, and all Publix stores accept competitor coupons.