AG Barr's daddy Donald wrote book SPACE RELATIONS in 73 portraying Epstein, Ghislaine Maxwell as ALIENS who trafficked sex slaves.

“Space Relations: A Slightly Gothic Interplanetary Tale” by Donald Barr has been thrust into the spotlight in the wake of the convicted pedophile’s apparent suicide, and eBay sellers — quick to link the two men — are now hawking it for as much as $4,999, Vice’s Motherboard reported.

“Parallels have been drawn between the plot of the novel and the current allegations of sex trafficking brought against the now-deceased Jeffrey Epstein,” one listing says, Motherboard found. “When Donald Barr wrote this novel he was a headmaster of a school that Jeffrey Epstein taught at.”

Motherboard picked up a copy of the book for $1.95 — before sellers began offering it for between $150 and $4,999.

The fantasy novel portrays an Earthling named John Craig, who is sold into slavery on a planet called Kossar. Craig falls in love with Lady Morgan Sidney — a Kossar leader described as having “high breasts and long thighs.”

Craig goes along with Lady Morgan’s demands to sexually assault a teenage slave as part of a clinic used to “breed” people, Motherboard said. The novel includes other instances of rape.