A friend of mine made tens of thousands, buying and selling trading cards. And that's what he sold, what he didn't sell is worth even more. As an investment, it

A friend of mine made tens of thousands, buying and selling trading cards. And that's what he sold, what he didn't sell is worth even more. As an investment, it beats most of the more "serious" options. It is crazy, people pay hundreds for a pack of new cards, just so that they can sell them for thousands later, and it works! And it has been working for decades, though it has been taking ridiculous proportions for the last few years. Now, you are probably better off printing trading cards than bank notes.