You don't need an acre of land. You can grow tomates in pots and keep them on your balcony (if it gets enough sun), even in a relatively northen climate, as long as it is the season. You will need to water them and prune them occasionally, but it is not really a lot of work. And it will keep you in tomatoes for several months. That is definitely cheaper than anything professional farmers can produce.
It will not replace storebought produce, but it is a very nice supplement.
Plant the bulbs before winter.