6. Luka Doncic Basketball Card 2018-1919
Manufacturer: Rookie Card
original price: US$ 16.99*
Worth today: US$ 4.6 million*
Autographed basketball cards are worth a fortune, in the past we've seen Antetokounmpo and LeBron James 2013-4 Patch rookie cards sell for $$ 1.8M each, or a fragment of Michael Jordan's used jersey that has been turned into an autographed card for US $ 1.44 million.
The record holder is a single-print rookie card signed by Dallas Mavericks point guard Luka Doncic, who raised $$ 4.6 million. Despite Doncic only being in his third NBA season, the record is unlikely to be broken anytime soon.
Other rookie cards are known to be worth good money, such as Tom Brady's own card, which sold for $$ 1.32 million. Those cards are worth almost as much as the players themselves – though not as much. Brady is now worth $ 145 million, while Luka Doncic is worth $ 5 million.