Not sure what "6 in 1" actually stands for, but sure these tomatoes are grown in California and thus not san marzano's. Still excellent IMHO though.
By all means anyone looking for these should explore local markets, especially Italian ones if there are any around. That is where I found them down the street for $1.59/28 oz can (Escalon only offers the crushed in this size). Funny to me since they were always there, I just did not know about them. Now it seems I can't find any small/Italian markets that do not sell them. I seem to recall someone posting that they had actually found them at Krogers or some other large chain supermarket. Not stocked with the other canned tomatoes, but with the prepared sauces way down the aisle, so maybe...?
I was also surprised to find that a couple of commercial rest/pizza supply's in my area allow cash and carry to the public so you may have a few around also. Not the easiest places to find since they do not really advertise but might be worth the effort even if you have to buy a whole case. Plus these places have lots of other goodies and all nicely priced - cheap!
All other Escalon products only come in the giant #10 commercial can size.
Lastly, I have also read posts where forum members were able to purchase tomatoes, flour, etc from a local friendly independent pizzeria.