The second promotion is targeted at new customers. She would offer a free specialty drink to incoming college freshmen by providing a coupon with their orientation packages. Because of her location near the college, she expects that $570$ students will come to Cool Beans for a free trial. Of those, she anticipates that $17\%$ will become regular customers who will purchase at least one specialty drink each week. The cost of printing and distributing the coupons is $$92.$

What is the dollar margin per specialty drink served?