My recent eBay stuff:
For 1 dollar:
Superman From the 30s to the 70s (1971, Hardcover)
The Superman Radio Show (eps. 1-27, Smithsonian casette release)
Superman Smashes the Secret of the Mad Director (graphic novel, 1966)
Elliot S! Maggin: Last Son of Krypton AND Miracle Monday (2 for $1!)
1988 Time Magazine: He's 50! (Curt Swan cover) with some TV Guide about Smallville
I also got Tales of the Bizarro World for $2 and about a month ago someone offered to sell me an original 1978 "You'll Believe a Man Can Fly" poster from eBay. I bought it, of course...25 dollars.
Now I have no money to spend on S-stuff for a while
I'm leaving this week for a Habitat-for-Humanity type of mission trip...there goes all my money for now.