Amazon UK offers The Smurfs on Blu-ray 3D / Blu-ray / DVD
for $4.74 (£3.29). At checkout, it drops to $3.95
(£2.74). With $4.44
(£3.08) for shipping, that's the lowest total price we could find today by $13.
This Blu-ray/DVD set is region-free, and the films themselves will play on U.S. Blu-ray players, but note that the extras and special features may not.