Try speaking to the London store - they were quite open to price discussions when I went in there and tried one of these on. But that was some time ago, and perhaps they are now more into the 'throw in things for free' rather than drop the price. It's worth noting I had zero intention of purchasing and told them so, as I preferred the older branding, but they still brought up discounts.
Worth a shot - they'll almost certainly offer a free first service without you even trying.