I am sorry you seemed to have missed what I meant, but I was in a rush so it is most likely my fault.
Yes obviously Google is fine for info but it is pants rubbish at finding you a good supplier. I tried to phone the number on that website and got no answer (actually I got an orange answer service!?!)
Just to clarify, I didn't mean where "can" you buy these from, I mean't where "do" you buy these from. Basically I am after a recommendation from someone who has bought one or for good supplier that probably has stock and is capable of answering a phone.