An enterprising New Jersey man raked in up to $20,000 a day running illegal marijuana vending machines — with at least 80 locations across the state, prosecutors said. Ben Gross, a 40-year-old Toms River resident, was arrested Friday after investigators identified him as the owner of the Barbwire vending machine company. Cops in Ocean and Monmouth counties spent more than two years tracing the operation, officials said. Ben Gross, 40, of Toms River, was arrested after authorities identified him as the owner of an illegal marijuana vending machine operation that allegedly raked in up to $20,000 a day, prosecutors said. Ocean County Corrections Prosecutors said Gross made between $17,000 and $20,000 per day from the machines. Marijuana is legal in New Jersey, but it can only be sold by licensed dispensaries to people 21 and older. Gross’s machines were not licensed to sell marijuana, authorities said.…