There is a cost to returning items to the retailer. Suppose the retailer pays the price, which endears them to the customer and increases the likelihood the customer will shop there again. In that case, the retailer must weigh the actual cost of the item against the cost of postage, handling, etc. I purchased two medical-grade step stools from Amazon, which required better skills than I possessed to put them together. I did not realize how complicated putting together the step stool would be before the package arrived. I contacted Amazon and told them I did not have the technical expertise to assemble the product and would like to return it. I received an email from Amazon telling me to keep or donate the product to someone who could use it; Amazon would credit my account for the refund. I did not have to ship the stepstools back to Amazon. I assume this is what you refer to as a returnless refund. Amazon retains my future business, and I have not lost money.