Combine a printable coupon with Ibotta rebates to save on Kellogg’s cereal at Walmart! Kellogg’s Corn Pops Cereal is already priced low at $2.98 a box. Buy two, apply the $1.00 coupon, and pay $7.94 out of pocket. Next, redeem a $1.00 rebate from Ibotta. The new price is $2.31 per box.