Spotted these tomatoes at a local Big Y (Northeast chain). Can says D.O.P Pomodoro San Marzano. No salt or citric acid, just SM peeled tomatoes, SM tomato juice, and fresh basil.
Gus Sclafani Corp (Norwalk, CT) imports many different food products from Italy. Their products are in many stores. Generally pretty good.
I have no experience with San Marzano prices but these are $4.39 for a 28 oz can. I bought one can and will give them a try.