ST. PAUL — Minnesota patients seeking medical marijuana come July 1 can expect monthly bills of $100 to $500 for their treatment, according to estimates from the state’s manufacturers.

With no hope of insurance covering even a fraction of those bills, the potentially high costs will leave some patients and their children with the painful choice of cutting expenses elsewhere or forgoing a chance at relief.

“At the upper end, it would be impossible. I don’t have $500 left over at the end of the month,” said Sarah Wellington, a St. Paul middle school teacher hoping to treat her multiple sclerosis with medical marijuana. “That’s over half my mortgage.”