Carfagna's is awesome when it comes to tomato product. With all the tomato products they carry, I hope you end up buying more than just a 28 oz can of 6 IN 1. They carry almost every Stanislaus product worth buying, and for reasonable prices. I've bought (or seen) Alta Cucina, Saporito Filetto di Pomodoro, Tomato Magic, 7/11, Full-Red pizza sauce (which is labeled "concentrated crushed" in our area), Saporito pizza sauce (maybe), Superdolce pizza sauce, Full-Red puree, Saporito puree (maybe), as well as some of Stanislaus's "speed scratch" and ready-to-serve products. If you want to try 7/11, get one of those cans ASAP. They usually don't carry it, but the dude ordered a case a few months ago just because I asked if they ever carry it. (I bought two cans, then ended up buying a case from a distributor.) And as you may know, the Stanislaus products only constitute about 5-10% of their canned tomato product selection.
The sliced pepperoni they sell in the deli is very good, but the price is ridiculous if you buy much of it ($7.99 a pound). They also sell Polly-O mozzarella in the deli, which is nice aside from the fact that they charge $7 or $8 a pound for it, even if you buy a whole loaf or two. (Since I can get single loaves of decent mozzarella at GFS for $2.50 a pound, it didn't take long for me to decide that the Carfagna's cheese price is ridiculous.)
The one thing Carfagna's sells that I've really come to appreciate is their sausage. Even though I've never liked sausage much, you gotta put sausage on deep dish. Their mild sausage and their Grandpa Carfagna sausage (with fennel) work real good with deep dish. It would be nice to be able to buy the sausage in bulk, rather than as links, but it's not much trouble to take it out of the casings.