Could you give me your advice on my new return policy created from an online return policy generator?

You may return all unopened items purchased at The Organic Cream Shop within 30 days of the original delivery. We will pay the return shipping costs if the product is defective or the return is a result of our error. If the item is returned for any other reason you are responsible for the return shipping costs and may be charged a restocking fee of 10 percent. No returned merchandise will be accepted without a Return Material Authorization (RMA). We will credit you in the same manner as your original payment within 7 days of receiving the returned item.