Hi Erich,
Thanks for the link.
I checked with the
Aviation Megastore here in Holland and they are offering both volumes at € 42.95 (~£36.50) each!
I don't know what the charges for international shipping are, but it I think they might be lower than the Red Kite offer of £25/£40 for international shipping for both books (which they are offering for £ 80.00).
All in all I think overseas customers might get a better deal from the Aviation Megastore. I have already placed my order and hope to collect the books this Saturday!
(By the way: I am not affiliated with the Aviation Megastore.)