In general, Wayfair accepts returns within 30 days of purchase for most items. Your order will need to be undamaged and in its original condition. There will be a small charge to return your order, calculated by the size of your item. This service costs between £4.99-£9.99 for small parcels, and between £20-£50 for large parcels. For mattresses, there is a 100 night free trial and refunds can go to store credit for free. However, payment to an original card method will cost £20-£30.