An alleged sex trafficking operation based out of a Brighton home — in which police said johns used Backpage.com to set up appointments with three woman made to work 14 hours a day — is not unusual, a sex trafficking expert said.

“Yes, it’s happening next door,” said Kate Nace Day, a professor emeritus at Suffolk University. “It’s very difficult for many, many people to comprehend how widespread it is, how deeply ingrained it is. This is an opportunity to say ‘This is part of our society, part of our neighborhood — that’s how bad it is.’ ”

The Herald reported yesterday how a neighbor’s tip led police to investigate and raid a Brooks Street home in Brighton earlier this year. Court documents outlined how two men and a woman — Hok Wong, 57, of Qunicy; Liwen Tang, 25, of Brighton and Liqun Xu, 32, of Brighton — reportedly ran the operation from March to July out of the residence.

The trio used online advertisements at Backpage.com, a website that has come under fire by Attorney General Maura Healey and other officials for enabling sex trafficking, saying multiple young Asian girls were available for “services,” court records state.

Prices were listed at $150 for a half-hour of services, $180 for a full hour and $360 for two girls, records state, with operating hours from 11 a.m. to 1 a.m.

Detectives monitoring the house in June would on a daily basis see up to five men per hour enter the home, stay up to a half-hour and leave, according to documents.

Those records also say detectives confronted several men leaving the house who admitted they had just paid for sexual services, and that detectives reportedly observed Wong, Tang and Xu bringing people inside.

Boston police raided the house on July 19 and rescued three women, who were taken to the Family Justice Center of Boston for help, according to the Suffolk District Attorney’s office.

Testifying before a grand jury with the assistance of an interpreter, the three women identified Wong, Tang and Xu as “boss” and said the trio gave them meals at the house, told them how much to charge customers and collected money at the end of the night, according to court records.

Police reported finding $80,000 in cash at the 108 Brooks St. house, along with a surveillance system and two boxes containing over 1,000 condoms each. That raid led to police searching another location and finding an additional $110,000 in cash, according to court documents.

Wong, Tang and Xu were each charged with owning a place of prostitution, keeping a house of ill fame, money laundering, and three counts apiece of deriving support from prostitution and trafficking persons for sexual servitude. They are being held in jail and their next court date is Jan. 19.

Day, who has made several documentaries about sex trafficking, said people continue to believe myths about sex trafficking — that it operates in “sleazy places” or that participants do so of their own free will. The Brighton case, she said, shows it can happen anywhere.

“This is a new form of shock,” Day said. “That alone can encourage allocation of resources.”