I'm lucky enough to be able to find Heirloom tomatoes grown organically, locally. I usually discover them at the regional village markets over the summer, but sometimes they even stock them at the Supermarket close by. Just one of the perks of living in the middle of the countryside, surrounded by farmland and orchards.
I'm not gloating, honest (well, perhaps just a tiny bit ...), I'm counting my blessings. Cheers.