Last week, the New York Times added a dagger symbol next to Donald Trump Jr.’s book when it hit No. 1 on its best-seller list, indicating its numbers were goosed by bulk sales.

Now we’re told Trump Jr. and brother Eric tried to sell the book by the boxful at a recent event. A spy at a Trump Tower party for “Triggered” told us that one of the first sons said from the stage, “Who will buy 100 books?” We’re told that between 10 and 15 guests volunteered, and Don Jr. turned to girlfriend Kimberly Guilfoyle and said, “You’ll remember who raised their hands, right?”

But a rep for the book told us, “Eric said it in jest, and there was no follow-up. [Trump Jr.] sold over 70,000 books in his first week, and his brother simply joked about people buying 100 books, which never happened.” Our spy said, “It definitely wasn’t a joke.”

We previously reported that the Times listed the book as No. 1 with the so-called “deadly dagger” symbol next to it to indicate that “institutional, special interest, group or bulk purchases” helped sales. The RNC has been sending out copies as a fund-raising incentive — but a rep told us, “We haven’t made a large bulk purchase, but are ordering copies to keep up with demand.”