Amazon has 9-Pack 6.5-oz Betty Crocker Cornbread and Muffin Mix on sale for $5.49 – 5% S&S Discount – 20% when when you clip the 20% off coupon on the product page = $4.11. Shipping is free with Prime or on orders $25+.
Note: this deal price is $0.46 per cornbread/muffin mix.