They might have been running the 2 for £12 Blu-Rays promotion for a while (+£0.99 each for international delivery). I just noticed today as I was shopping for Blu-Ray for kids. Two of them that I was looking for are on the list — Despicable Me 3D version (with 2D included) and The Adventures of TinTin.
I know Despicable Me is a bit old (great movie though). There are other more recent titles — Fast & Furious 5, Journey 2, Sucker Punch, The Grey, Paul, etc.
Note with UK-sourced Blu-Ray — these are region B so playable on Australian Blu-Ray players.
Good deal, but I still haven't made a dent in the stack of $5 Blu-rays I purchased at Myer on the weekend :)