Our refund policy is detailed in our privacy policy. The second half of it reads as follows:
There will be no returns on purchased items, so once you have completed a purchase at The Threshold Store there is no refund on that item. All purchases will be regarded as final. The reason for this is simple, and obvious: the way most software add-ons sold, both here, at The Threshold Store, and at other, similar software stores, there is limited possibility of protection from what amounts to piracy. This does not mean that we take piracy lightly, however; please read more about this under our Terms and Conditions.