I went to an auction a few years ago and picked up the second appearance of Thor for only two dollars (sold it an hour later for twelve hundred) and another last year and got a Batman from 1944 for fifty and it is worth over four thousand.
I stopped by the local Peddler's Mall last month and found an old circle rack for comics for only five dollars, it's worth one hundred fifty.
Kind of like the TV show American Pickers, you really have to know your stuff, but it is amazing what you can pick up for a song if you know what you're doing.
I never looked at it as how much I made in the end, but how much I paid for it and what it went for.... fun stuff, but too old to trapse all over the county going to sales anymore...(I have gotten lazy in my old age...:O)
If you ever find a White Castle mug, by mcnikel china and it has 3 colors on it...its worth 300 dollars...It is a rare mug where the grass in green in front of the White castle logo and the words White Castle are in red. Plus the white mug and black logo Most are just black on white mugs.. I was shocked at what it went for. There is also one special FireKing Snoopy mug that gets up into a hundred dollars..lots of them are only worth about 10 bucks..