This isn’t meant to sound snobbish, but you’re not missing much. The Wallys in NJ are a nightmare (dirty and disheveled) and they never have any collectibles worth a damn, since the scalpers are constantly patrolling. My mother-in-law lives two blocks from one, and I’ve never found anything desirable.
Here in Virginia, it’s a different story, but not a better one. There are four Wallys I pass on my commute, and finding something collectible on the shelves is rare. Not due to scalpers, but because their toy sections are laughable (unless it’s Nov/Dec.) I can get 150 different kinds of truck and car batteries, but retro Super Powers? Nah.