Coupons.com has a super rare Target coupon listed for $1 off one Dr Pepper 12 pk. It expires today, so you’ll have to use it quickly!
The coupon may not be listed in the regular coupons. Use zip code 90210 and look at the ads on the right-hand side as well as above and below the coupons. If you don’t see it right away, try refreshing the page until you do. I found the Dr Pepper ad on the right-hand side of the page. Good luck!
(Thanks Penny Pinchin’ Mom and Hip2Save!)