Generally in my area (Westchester. NY / Southern CT) they tend to have the best prices on eggs and sometimes on milk.
Things I buy a lot of:
Butter
Joe-Joes cookies - the basic vanilla/chocolate are pareve, but please check - some of the seasonal flavors are Dairy
Anything but the Bagel/Chili Lime spices
English Muffins - a lot cheaper than Thomas'
Square Pizza Crusts - these are great, i use them for both Dairy and Meat pizzas
Their Pizza Dough is very good too - stopeed using it b/c DW/Kids prefer the square crusts
Chocolate Babka
All kinds of Breads and Wraps (My kids like the Habanero Lime wraps)
Pastrami Style Lox
Fruits and Veggies there are usually good, but prices are a mixed bag - some better than the local stores, others worse.
Kefir yogurt (not CY)
For the kosher consumers - please realize that while they have a lot of products that have commonly known hashgachas - OU, OK, Star-K, Chof-K, etc. There are plenty of products with funky hashgachot, that you will probably need to check out.
There was a point that they also carried 'Pastures of Eden' kosher feta from Israel - I believe that this is Cholov Yisroel and has a Chug Chasam Sofer stamp on it. It was the target of BDS, but they kept carrying it until around pesach time - I asked and they said they'd be replacing it with a TJ branded version from Israel - they told me it would be in stores in Novemeber - I am looking forward to reporting on it.