Bottles are refilled at a flat fee of $7.50 per bottle regardless of one time or recurring orders. One time orders will incur a $6.00 delivery fee. Recurring service has no delivery charge. 4 Week service has no minimum, if you do not need service simply let us know to skip your delivery and there will be no charge. Bi-weekly service currently has a 3 bottle minimum. Feel free to call us at 602-600-5060 if you have any special needs. You may preview the different types of bottles we carry on our equipment page.