Joshua Thompson - a security technician in his twenties from Livonia - filed a class action suit in Wayne County Circuit Court earlier this week against his local AMC theatre, in a bid to force all cinemas to lower their prices.
Thompson's lawyer told the Detroit Free Press: "He got tired of being taken advantage of. It's hard to justify prices that are three and four times higher than anywhere else."
Thompson refused to comment because he said that he didn't want any notoriety, but in the lawsuit he claimed that he paid $8 (£5) for a drink and a packet of chocolate-covered peanuts at his cinema, nearly three times the amount of a local store.
He also revealed that he used to take his own snacks with him until the practice was banned.
Consumer experts have predicted that the case will be dismissed, but it has caused other Detroit moviegoers to join the debate.
While leaving her AMC in Southfield, Rebecca Motley said: "The prices are ridiculous. I don't know how kids can go on their own to a movie anymore."
Timothy Fells added: "Movie concession prices are extremely high, and that's why I don't stop at the snack bar very often."