NBA Finals courtside tickets sold for more than $100,000 as the New York Knicks pushed for their first NBA championship since 1973, a feat clinched Saturday night. In Madison Square Garden, much of the front row was occupied by celebrities, including Taylor Swift, who attended Game 4.

On Sunday, the Cleveland Cavaliers, who the Knicks defeated in the conference finals, will soon find out how valuable those seats are after the games are done.

In partnership with authenticated memorabilia marketplace The Realest, Cleveland is auctioning the chair Swift sat in during the Cavs’ Eastern Conference finals series against New York. As of Saturday evening, the top bid was $7,000. Travis Kelce’s spot is also available, as are chairs used by Kylie Jenner, Timothée Chalamet, Ben Stiller and Machine Gun Kelly.

“I’m definitely surprised at how much attention it’s gotten,” Cavaliers chief marketing officer Chris Kaiser said. Earlier this year, the team sold a seat used by LeBron James when the Lakers visited for $1,905. But the Cavs didn’t stop there. For $245 more, a collector grabbed the grip powder LeBron used during his signature pre-game routine.

“Anything that our authenticators can put their eyes on and mark, it’s all fair game,” Kaiser said.