Go to Blu-ray on the header bar, click on Blu-ray in the left hand column, then movies, then see all. Sort by price. Go to page 4 to avoid the preorder titles.
Some examples below below £6.50 ...
INTERVIEW WITH THE VAMPIRE £4.99
DONNIE DARKO (Original Version) £5.99
THE GREEN MILE £5.99
THE LAST SAMURAI £5.99
ONE FLEW OVER THE CUCKOO'S NEST £5.99
THREE KINGS £5.99
TRAINING DAY £5.99
V FOR VENDETTA £5.99
THE BROTHERS BLOOM £6.49