To create this list of the most expensive baseball cards, we used data from credible sources, including Professional Sports Authenticator (PSA), Beckett Grading Services (BGS), Heritage Auctions ...

In June of that year, Beckett Football Card Monthly published a story outlining the top 20 most expensive Barry Sanders cards. The total cost to purchase those 20 cards was just over $11,000.

In fact, some of them sell for thousands of dollars. This list will go over some of the most valuable Pikachu promo cards out there. It's important to note that prices will fluctuate over time.

Upon release, these are the most valuable chase cards that collectors want to get their hands on when opening those Elite Trainer Boxes. The set’s pretty new, so prices are still moving around ...

There are lots of collectors who are more than willing to spend top dollar to get their hands on a copy of this unique card. Charizard cards are usually pretty valuable in general. As for promo ...