NEW YORK (WFAN) — When you’re hot, you’re hot. Just ask the talk of New York, Knicks star Jeremy Lin.

A flurry of items have made their way to eBay since “Linsanity” began on Feb. 4. Well, a new item is about to hit the online auction block.

And it could be the biggest gainer yet.

29-year-old Yair Rozmaryn purchased a Lin rookie card for $1,000 last Monday. On Thursday night, the upper West Side resident plans to make it available on eBay.

“Well first of all, I’m a lunatic,” Rozmaryn told WFAN’s Boomer Esiason and Craig Carton on Thursday. “I figured hey, if this kid could take off there’s a real big market for him. So why not take the chance?”

LISTEN: Rozmaryn with Boomer & Carton

By Friday morning, bids had already reached nearly $15,000.

“Aw, that’s crazy,” Lin later told Boomer & Carton. “If that’s the case I need to get myself a card and sell it on eBay too.”

EXTRA: Lin’s entire interview with Boomer & Carton

The card is numbered 17 in a set of 25. No. 17, of course, is Lin’s jersey number with the Knicks.

Rozmaryn said the card has been autographed by Lin and also contains a piece of the star’s jersey.

He told the Daily News that he hopes to fetch $75,000 for the collectible. His figure was a more modest $25,000 to $50,000 when asked by Boomer & Carton.

Perhaps Lin said it best: “I’m gonna have to see it before I believe that!”

Hey, it’s a “Linvestment.”

Rozmaryn wants the phenom on hand when completes the transaction.

“I want it to happen at Madison Square Garden,” he said, “with hopefully Jeremy Lin present.”

How much cash would you shell out for the card? Sound off below!