Well that'll teach me!!!!
I've just been back to buy up the 6 or 7 books that they had left, and would you believe it some toe rag

has beaten me to it.
I was informed that the person who bought them did so after reading about it on an internet forum, so it seems I've been hoist by my own petard (as they say) (though who the heck "they" are I don't know).
So please let me apologise to all the people who I promised I would get a copy for. It was perhaps a little premature of me. I did try though...