Ours is at a kiosk and there may be a mark up for independent retailers or something but it can be a bit expensive. I do not recall what the 1 month supply is...maybe in the $20's or low $30's. If you go with the 3 month supply it is in the $50's. There are various types of packs....I don't get the basic but instead the package that includes the 3 main items plus the moisturizer and/ or oil control. I pay $50 or $60.
If you have not used it before, or your daughter has not, just remember that it bleaches things. I ruined many a towel prior to realizing that I was the problem not detergent or something else!!!