Not sure how many shop/coupon at Dollar General, but I got an email and they have a new Rewards Program. Earn Points for buying participating products. Then you can redeem your points for DG Gift Cards or Racing Memorabilia, Grand Ole Opry items such as mugs, cds, t shirts, boots. You can sign up at their website, then when you buy products it prints a code on your receipt, you enter your codes online and redeem online.
Sorry I don't have a link but go to their website and click on the Rythm and Race Rewards to sign up.