Normally I buy from Amazon Uk but I have noticed that there is better value available on the net. AC audio online is one of those places that offer better value since they are long established specialist businesses that have come onto the net. The other aspect is that this is a British business so if I have a problem I can contact the seller whereas with Amazon market place I sometimes find the seller is either in Europe or the Far East. Then there is the delivery time - very quick. Neither is it a problem that the business is not in London because a lot of specialist businesses in London have closed. The kicker for finding the product is you tube and its product demonstrations.