Star Spangled is probably worth the most (around $40 - $50 retail in that condition).

I love the old Fiction House Covers (Wings, Jungle, and Jumbo). They do have some value also ($20 - $30) range per book

So I think you did pretty good on your investment.

I got out of buying comic books around 25 years ago.....still have some nice stuff but would get rid of them for a fair price. but still can't sell the original artwork.

Nothing like owning a one of kind item (splash page from Avengers Annual #1)