Book club editions are sometimes thinner and 1950s and newer Viking BCEs are taller (usually a quarter of an inch) than first editions, but the BCE of And Be a Villain (and perhaps some other pre-1950s Viking Nero Wolfe BCEs) is the same height as the first edition.
Instead of buying the rights from publishers to sell club editions of books, they wondered, why not publish books on their own, or in joint projects with the publishers?
Book club editions are sometimes thinner and always taller (usually a quarter of an inch) than first editions.
Book club editions are sold to members at a good discount compared with the original issue price.
Furthermore, Warsteiner has created a long-neck beer bottle and a "limited club edition" clear-glass bottle to target club-goers.
Book club editions are bound in cardboard, and first editions are bound in cloth (or have at least a cloth spine).
Die Grössten Erfolge (1985) (club edition)