You might remember your parents were busy collecting sports cards during your childhood. Yeah, those printed cardboard cards might look like a piece of trash for some. But trust us when we are saying they cost millions now! Collecting sports cards was an old hobby for kids and teenagers. It was a favorite pastime and leisure activity that some of your grandparents still believe was a waste of money. However, such an old hobby has resurfaced like a phoenix rising from the ashes! After nearly 30 years, the same old-school hobby has become a million-dollar industry. And this surge is…