I suspect there will be a few left - WEBF omitted the paragraph containing the pricing:
‘Too Close for Comfort’ is available as a signed case bound edition price £150 or a signed Collectors’ leather bound edition price £350. Proceeds from the sales of the book and the auction of the paintings will go to the Fly Navy Heritage Trust.
It looks like one for the serious collector at the moment (there are only going to be 250 of the leather bound edition), although I suppose that there's always the possibility of a 'standard' edition appearing in due course.