Well, let us just say that ground shipping with our company is always FREE with the purchase of a ES412 (or price equivalent). Your order ships free to USA addresses, including military, in a plain unmarked box for privacy.
Generally, we do not accept returns of this item for health and hygiene reasons. If you are not getting the results you desire, please contact us and we can assist you in getting desired results via email or phone. If the unit is truly defective we can take it back and replace it with a new unit but this is extremely rare. We have only seen 1 defective unit in our time.