Sellers have the ability to select their shipping and return policy preferences - just go to the "My Preferences" section in "My Account". Keep in mind that these are only preferences and all negotiations occur between the Buyer and Seller of the item.
When listing an item for sale, the Seller has two (2) return policy options to choose from:
1. to not accept returns for any reason
2. to accept returns under the condition that it is returned to the seller within 2 weeks in original condition and packaging.
Be sure to confirm all details before committing to buy an item.