They will pay the costs of return if a) the products are faulty or misdescribed, or b) they have told you of an upcoming change to the product, a delay in delivery due to events outside of their control, an error in pricing or description, or because you have a legal right to do so as a result of something they have done wrong. In all other cases, you must pay the costs of return.
If they are refunding you for the delivery costs of your returned item, they will refund you the amount that it would cost using the least expensive delivery method they offer, regardless of the delivery method you use. If you are responsible for the costs of return and they are collecting the product from you, they will charge you the direct cost to us of collection