It's more expensive on their website (?!) so I snapped this up today in the Eastleigh (Hampshire) store as it was cheaper than anywhere I've seen online.
Note to Blu-Ray newbies: you've not seen the power of HD resolution until you've seen Laurence Fishburne's wonderfully furrowed features in a close-up shot. FYI, you can also get this experience in MI 3.
I should also add that the transfer to Blu-Ray is smashing - buy it if you have the DVD.