I think this Daves of Middlewich is a fantastic dealer for exchanging them. As BC has stated, he is under no obligation whatsoever to exchange them unless they were faulty.
Bill, you are right, beauty is in the eye of the beholder, but some people just cannot design something with aesthetic qualities as well as reliability. However, that's why some poeple like driving an old rough Land Rover and others love sleek Italian sports saloons.
You just can't beat the Italians for style, perhaps they might come up with a bite alarm sometime. Then again it might only deal with backdrops.