I call wildly_fanciful_statement. Spider-Man is an iconic, high-profile character whose appeal has been mainstream for at least 30 years. I find it hard to believe that even someone who knows nothing at all about comics or comic book subculture would look at a cover that says 'Introducing Spider-Man' and not question whether if it had any value outside of yard sale filler.
All depends where you are. The mess people throw away in the garbage where I live is insane. Then again, my town is split into two. One half is pelham(average 500k-700k homes and that's where I live) and the other half is the manor(2 mill and up homes). The mess the people in the manor throw away on bulk garbage nights is insane. I always go through the manor on my way to work when its bulk garbage that morning. You would be amazed at what people don't care about.
So what do you pick out?
I picked up a crate of records one two diff occasions. One time it was LPs, nothing good. I gave them all away to good will. The second time was a bunch of 45s from the 50s. Gave them to my uncle for 1,500$. I know they were worth more since there was one record in there that booked for 8,000 but it was beat up pretty good.