Here are the weekly coupon deals at Publix, valid 3/6 – 3/12. The gas card promotion is back this week. Purchase $50.00 in groceries and save $10.00 on a gas card! There are some new Publix digital coupons in the matchup. Remember, Publix digital coupons are manufacturer coupons that do not double and can only be used once. If you have not signed up for this program, do so at publix.com. Also, keep in mind that most Publix stores (except Florida) double coupons that are worth $0.50 or less, and all Publix stores accept competitor coupons.