Fringe: The Complete Fourth Season [Blu-ray] (2011) for $22.94 using their crappy Amazon convertor.
Those who are worried it is region free
http://www.blu-ray.com/movies/Fringe-The-Complete-Fourth-Sea…
Amazon UK is $54.62
JB is $54.98
Sanity is $54.99
Big W is $54.84
Is the current 5th season its last or ongoing?