september 8th for uk
november 4th for u.s
£86.99 is the cheapest uk pre-order at the moment: http://www.thehut.co...n/10950981.html
That works out at $149, it is region free too. U.S boxsets are more expensive in america so expect to pay much more in america, might be cheaper to import the uk version.
Only seasons 1+6 are available on bluray, now we can have a complete boxset