British Harry Potter Audiobooks?

I live in the USA and I REALLY WANT THEM (read by Stephen Fry). Does anyone know how I can get them aside from eBay (I'd really prefer a place to buy from that won't give me something whose quality is questionable...) or if it's possible? I've never bought something that was sold in a different currency, is it even possible to online/what do I have to go through to do it?