In my opinion Trader Joe's is only good for hummus (their store brand hummus is better than any other hummus I've ever bought at any grocery store) and their frozen food section (because they carry a lot of stuff other grocery stores don't carry). Oh and I like their boxed whipping cream that doesn't go bad quickly so you can keep on hand in your pantry for whenever you want to bake. Their produce and other items are overpriced. Pastries are just okay. I don't really care for their "healthy" version of chips and cookies and such.
So, because I only go there for a few items, I usually only shop here 4-5 times a year.