Oh! card is going to be worth more than what it means to the person who holds it but some are quite valuable. Here's how to ...

Rich DeMuro takes a look at an app called Collx, which lets you scan all sorts of cards to find out their value. Works with baseball, basketball, football, hockey, soccer and wrestling sports cards.

The value of a collection can grow based on the original production rarity and the scarcity of the items that remain. For example, rare baseball cards can fetch millions of dollars at auction.