That's no problem to return a New or Marketplace book.
The shipment you received from the seller should include a packing slip with detailed return instructions. We would strongly encourage you to purchase tracking for your return so you can verify when your order has been delivered to the seller.
If those instructions were not included, please let us know and we'll be more than happy to track down that information for you. Simply submit a ticket below.
Once the seller confirms receipt of your return we will process a refund for the returned item(s).