For sure! I do 6 tomato plants, lol. I don't can them anymore, also not worth it here so I stock up on Tuttorosso when on sale. & everything I sow directly I save seeds for (beans, squash, cukes, dill) so it's all free to me - garlic too. I buy tomatoes, peppers & onion starts, that's it. Well except for the stuff I see that I absolutely have to have when buying said starts, of course.That's fair. I could see if your garden is smaller how starts make sense.
It pays off for me because ~60 tomato and 32 pepper plant starts would cost me a small fortune here. The cost savings from last year alone paid for the seed starting rack I setup with grow lights. I do still check out the starts at the nurseries and stores come Spring and may pick up a few for variety.
