In the above article the mother says it is so nice to want a tomato and go out back and pick one, which of course is true. What lots of folks don't take into account in the further savings of not hopping into the car and driving to the market/store to buy a tomato.
Most of us know how many times we've gone to purchase a tomatoe, potatoes, carrots or that other side dish for supper that night. How many times have we run to the market to put together that salad? Not to mention how many times we will buy something else that we would not have had we not gone to get the lettuce. The savings really add up.