Libby's Canned Vegetables! Make sure when you click the link to enter the zip code 77477 to get the right coupon! This coupon is for $1.00 off 4 cans of any canned vegetables, but the Sweet Corn is on sale at Walmart for only $0.75! That means you can get 4 cans of corn for $0.50 each! This is an awesome time to stock up!