A one-of-a-kind Luka Doncic rookie card sold for $4.6 million

• A one-of-one Luka Doncic rookie card just sold for $4.6 million.
• It's the most expensive NBA card sale in history.
• Memorabilia is having a moment.

A one-of-a-kind Luka Doncic rookie card sold for $4.6 million over the weekend, becoming the most expensive basketball card in history.

The card was purchased by collector Nick Fiorello, according to Darren Rovell of the Action Network. Fellow collector Bolillo Lajan San shared news of the sale on Instagram.

"Many heard there was a deal brewing since back in November of 2020 for the 2018-19 National Treasures Luka Doncic Rc Auto Logoman 1/1," he wrote. "Even though there was a few adjustments to the sale price since then, today my new business partner / friend and I have finalized the deal at 4.6 million for the card."

According to Rovell, it's the second most expensive card ever sold, trailing only a 1952 Topps Mickey Mantle, which sold for $5.2 million in January.

The record-setting sale is just the latest in a string of mind-boggling deals in the memorabilia market. In the past year alone, cards for athletes including Giannis Antetokounmpo, LeBron James, and Michael Jordan have all sold for more than $1 million each.

The trading card market isn't the only one that has seen massive transactions in recent months. NBA Top Shot, an online marketplace that allows fans to collect blockchain-backed "moments" that feature videos of significant plays, has exploded in recent weeks, with fans paying more than $200,000 for select highlights.

Between the sale of Doncic's rookie card and the emergence of NBA Top Shot, the market for sports collectibles is seeing a lot of money flying around.