Why don't you offer refunds, returns or exchanges on your downloadable products?
With a tangible product, such as a softcover or hardcover, if the customer returns the product, the customer no longer has the product. It is a true return. By their very nature, once a downloadable product (eBook) is received by the customer, it is received. There is no way for us to retrieve the file in such a manner that the customer no longer has it; therefore, there is no way to actually "return" a downloadable. If there is no tangible return, there can be no refund.
If there is an issue with a corrupt file, we will gladly send a new file, but there are no refunds, exchanges (for a different product), or returns allowed on downloadables.