As B&W technically can't be mail ordered, your dealer would be a good bet or phone B&W. Hifigear might be able to sort you out though but if it's just RRPs, the WHF review site will list them.
Hi Try www.cloneyaudio.com . Cloney Audio are one of the few serious Irish hi-fi dealers and I have found them to be really helpful as well as giving good advice. Because of the strength of the Euro aginast the Pound Sterling they are now quoting prices in Sterling to discuourage people from shopping in Sterling zone. They have the sterling prices for most of the B&W range on their website. Click the link on the home page.