Part of the 'Egg Hunt' Easter sale on the PS Store which has new items every 48hours (thanks beakeroo)
Seems to be a pretty decent price considering Ozgameshop has the physical copy of Spec Ops for $34.99 and Duke Nukem for $14.39 , I usually use them as a reference point.
Duke Nukem received pretty average reviews (and that might even be generous), but Spec Ops was generally reviewed more favorably.
just a reminder, Spec Ops could be added to Instant Game Collection in the future, considering they have done it for US.