I suppose a lot of people feel that way. I wanted to explain to her that by starting tomato plants early and late, by planting different varieties, she could have tomatoes from July well into November. I wanted to describe the difference in flavor between a chilled Roma that has been shipped from the Central Valley and/or gassed in King City to a lovely, plump San Marzano picked in her own garden minutes before slicing. I wanted to wax poetic about the variety of sizes and shapes, tastes and textures, the delicate skins on tomatoes available in the home garden. I wondered if she had ever stood by a trellised cherry tomato plant and popped succulent little sweeties into her mouth right off the vine.
A book came out a year or so ago called The $63 Tomato. The writer kept close tabs on the cost of putting in a garden and he ended up evaluating the cost of his tomatoes at the rate of $64. the tomatoes I grow cost far less than that. But them, I have a garden with good soil. It is fenced to keep out dogs and geese,, it is wired to keep out gophers, and the soil has been enriched over the years with the addition of various composts, manures and cover crops. We do not yet pay for our water because we have a private well. The time we spend in the garden is not considered work, so we don't assign an hourly wage to ourselves. The cost of seed is small and, because of the line of work we are in, we have an ample supply of free transplants. So, in many ways, our tomatoes are free.
I am always amazed at how much food we can grow in our little 30 X 15 foot garden. We supplement it with barrels of cucumbers on the deck, a bean trellis out by the well, and large containers of lettuce by the back door. Perennial herbs are grown in the landscape and the delicate ones are picked fresh from the greenhouse when needed.
I know that to start a garden from scratch is a time consuming and expensive endeavor. But you should only have to do that once. After that, it's all free.
Native Americans planted corn, beans and squash (the 'three sisters') in the spring and then left it to grow on its own. They returned from time to time to do a bit of weeding perhaps, but it was a low intensity project that provided a considerable amount of food. Gardening can be extremely time consuming or kind of laid back, depending on your nature. Plant, weed, water and reap the rewards. It IS worth it.