15.5oz Post Shredded Wheat Cereal for $1.38 at Walmart (Ibotta rebate) Normally $2.88 Posted by Harbor Master on 9 December 2017, 2:45 pm Tweet Walmart sells 15.5 oz Post Frosted Shredded Wheat Cereal for $2.88. Buy one for $2.88 and then submit for $1.50 Cash back from Ibotta. Final price $1.38! Even less if you have a coupon to stack. (The Ibotta rebate is valid up to five times!) Submit for $1.50 Cash back from Ibotta when you purchase Post Shredded Wheat Cereal for any variety, 15.5 oz. box only(may be redeemed up to five times per receipt)