Yesterday, Casper caught Mega Millions fever - and TONS of you called in and won tickets. By now, you've probably heard that winning tickets were reportedly sold in at least three states - none of which were Colorado, apparently (which is where we bought your tickets from). However, even if you didn't win over $640 million - DON'T TOSS THAT TICKET YET. It could still be worth anywhere from $250,000 - $2. Here's how to check and see.