Just found a new printable Del Monte Coupon at Coupons.com which is to Save $0.50 Off 2 cans of Del Monte Canned Tomatoes. Just change your zip code to 43035 if you are unable to find the coupon.
This coupon is redeemable at Walmart for the following deal:
Del Monte Diced Tomatoes rollback price $0.78
Use the $0.50 Off 2 cans of Del Monte Canned Tomatoes here
Final price: $0.53 per can