Next best seems to be £6.64 from Zavvi's EBay outlet, but at least £7.99 everywhere elsewhere.
"Contains the films:
Austin Powers: International Man Of Mystery.
Austin Powers: The Spy Who Shagged Me.
Austin Powers: Goldmember.
Cast Biographies and Filmographies.
Original Theatrical Trailers & Featurettes.
The World of Austin Powers Featurette."