7. Basketball Card of Luka Doncic 2018-2019
While most of the items on our list are old, this card is only a few years old. It would have cost around $16.99 originally, but today is said to be worth a staggering $4.6 million.
This item broke records as a single, signed basketball card. It broke rookie card records from the likes of Michael Jordan, LeBron James, and Antetokounmpo.
These cards and their high value make them almost worth as much as the players themselves. Luka Doncic is said to be worth $5 million, which makes his card not far behind him!