It seems to me that it isn't worth growing something that is inexpensive and readily available at the store. But it does seem worth growing things you can't get good quality at the store or is too expensive at the store.
Fennel should be easy to grow but is expensive at the store.
Herbs are easy to grow and are expensive at the store
Tomatoes easy to grow but you can't hardly get ripe tomatoes at the store.
Peaches and nectarines not so easy to grow but you can't get them ripe unless a farmer near you grows them.
shallots easy to grow ridiculously expensive at the store
Things that don't seem worth the effort because this type good quality, cheap produce is available:
peppers, potatoes, onions, carrots, broccoli.
What do you think?