$3k is probably just the base fee. Then there are all of the extras: "Trainings" , additional scrimmages/games, etc that cost something. Throw in some Swag, hotels, meals, travel & whatever else they can squeeze you for. For that price, you should have the director on speed dial to find out what they are going to do if you carry 28 kids and only 25 can participate.
"Dont ask... dont get" Cha ching