Hello. I'm new to this site. I'm a complete comic book novice in need of some answers. Recently I purchased a box full of old comic books for £20 at a flea market. I know nothing about the DC/Marvel franchise. I just looked at the date and thought they might be worth something. Only 20 quid so took a gamble. The date on them range from 1996-2000. Very good condition. Can I re-sell these for quite a bit more?