Half an hour ago there were 4 new on Amazon, all gone now of course but Amazon do seem to be getting stock in regularly these days. If you have the stock popper-upper thing open you should catch one at some point quite soon.
I say that, but I 'caught one' on Amazon three days ago and it hasn't been despatched yet.... so I'm keeping the stock alerts link until it actually turns up I'm a bit cynical now having been caught by the Virgin cock-up (where they said they had them in, and then emailed to say 'sorry, out of luck'.)