So cynical! What made you this way vanhelsing? Was it the death of Sirius that finally turned you, as it has so many others around the globe, to the dark path? I reckon it's plausible that some underpaid, disrespected, young shop attendant ('cause retail doesn't have a real union!! *stand for the 'Internationale'*) is left to run the shop on a late night shopping night, sees a box of HP books and puts the on the shelf and ... wha la! ONE very happy customer!