Dealerships and dealers

A friend just got an oil change at the dealership in his Ram 1500. They called him at work and told him he also needed a cabin filter too, so thinking that was a cheap thing, he told 'em to go ahead. When he went to pick it up the bill was over $250. The cabin filter was $48+ and labor was $48. They also had to put in a drain plug kit as the seal was supposedly bad. And there was a misc shop supplies charge too. I told him I'd be glad to change his oil and cabin filter in the future for just $200!!!