 One parent had to fork over $26 to treat his kids to a small ice cream sundae and a shake float. Another parent spent upwards of $60 to buy cones for a family of four. And it's not just ice cream that's costing more. A Taco Bell cheesy gordita crunch up more than 111%. A medium fry at McDonald's up 167%. And an eight-piece nuggets at Chick-fil-A up 98%.