If you can find a cheap copy, Hachette’s Nemesis 4 (issue 42; vol 22) also has that strip, along with most of what’s in the new £40 book. I’m not sure I’d buy a £40 volume for that one strip, especially if I didn’t have the first two.
(The one thing I thought was a shame in the Hachette volumes was Torquemada’s Second Honeymoon being in greyscale. Argh. So near and yet so far.)