Parents upset over cost of dual enrollment, seem to miss big picture

We paid $140 for a dual enrollment class DD took this past summer, but that was billed by the high school as a “summer school fee”. If whatever class you were taking (DE or not) was not a remedial class, you paid that fee. She is taking a dual enrollment class this school year that will count for two college courses (6 credits), and it is not costing us a dime. There is no textbook - the teacher has handouts and lab instructions posted online.