Spencer Pratt admits he sold pics of teen Mary-Kate Olsen partying with Henry Winkler’s son for whopping price

Spencer Pratt confessed to selling photos of Mary-Kate Olsen as a teen partying with Henry Winkler’s son, Max Winkler, for a jaw-dropping sum.

“The Hills” alum made the admission in an excerpt from his upcoming memoir, “The Guy You Loved to Hate: Confessions from a Reality TV Villain,” set to hit shelves on Jan. 27 — after noticing a “photo shrine” to Mary-Kate in pal Max Winkler’s bedroom back in 2004.

“I think it got up to like $90,000,” Pratt recently told Page Six Radio’s Danny Murphy, Evan Real, and Ian Mohr of the amount he collected for photos of then-teenage Olsen — adding that the first photo he sold of the “Full House” star, 37, was sold to entertainment publication InTouch for $50,000.

“These lovely individuals are already hundred-millionaires,” he said of the mogul actress, noting that “Nothing I sold …. you wouldn’t post on your [Instagram account].”

Pratt, 42, also said it was another photo — that he didn’t actually sell — that caused him problems.

“There’s a photo of me like at a semi formal, and there, Mary-Kate, she looks inebriated,” he told Page Six Radio.

“I didn’t sell that photo,” he added. “I’m in it. That’s somebody else, so that’s the one I get a little heat for. But my photos were clean.”

When asked if he ever heard from her, Pratt also joked that he gets “Christmas cards” from the Row fashion designer.

Reps for Olsen and Winkler did not immediately return Page Six’s request for comment.

Pratt wrote in his memoir that he came across the photos by chance and seized upon the opportunity to “monetize” his “proximity to fame” in the “golden age of tabloid voyeurism,” 2004.

“Young love documented in European hotels, Hollywood parties, stolen moments,” he wrote of Max’s “photo shrine” to his ex, Mary-Kate. “This, I realized, was a wasted resource.”

“I asked Max if I could take the photos off his wall — you know, for his healing process,” he wrote. “He didn’t say no, so I took that to be a yes.”

Pratt walked out with the pics and in a “moment of no return” ultimately contacted an editor from Us Weekly with a proposal for the images that “show[ed] her being a normal teenager. Partying.”

He was put in touch with a photo agency, he wrote, and subsequently handed over the photos “like we were arranging a drug deal instead of trading teenage romance pics.”

“Here I was, 20 years old, turning my buddy’s romantic misery into startup capital,” he wrote of the experience.

“Less than a week later there it was, evidence of my entrepreneurial genius staring back at me from the InTouch cover at a gas station: ‘TEENS GONE WILD!’ across the cover,” he recalled.

“A shot of Mary-Kate with a constellation of empties —‘LOOK AT ALL THE EMPTIES!’— and there I was in the background, frozen mid-shaka. I hadn’t sold that frame. Someone else was shopping, and now I wasn’t just the seller, I was part of the merchandise. My face was now forever linked to Mary-Kate Olsen’s supposed wild phase, preserved in grocery store checkout lines across America.” 

He later wrote about opening an envelope containing a “check for $50,000” and whispering to himself, “I’m rich.”