Why did they do 7 then two more?
Because they're Zavvi. And Zavvi never do anything sensible these days.
Actually, it was MGM and Twentieth Century Fox Home Entertainment who messed up by incorrectly stating that "In the UK ... QUANTUM OF SOLACE and
SKYFALL have previously been released in this format." when, in fact, of these two, only Skyfall has previously been released as a Steelbook in the UK - there has never been a UK QoS Steelbook.
Someone must have put them right! Actually, I was one who dropped them a note about it, but I'm sure that it couldn't have just been me that made the difference!!