I use a price tool to detect price changes. Apologies if some of these have already been identified in a advertised sale. Most of these were over £20+ a while ago but dropped to £2.99 now.
HD-DVD only (apart from the last few) so don't get too excited. Also some may have gone out of stock. I checked the majority of them but not all.
Rio Bravo 2.99 (edit now £17.99)
16 Blocks 2.99
Rumour Has It 2.99
V For Vendetta 2.99
Superman 1 2.99
Superman 2: Richard Donner Cut 2.99
Music & Lyrics 2.99
American Gangster 2.99
Also found (NORMAL DVDs)
Hell (aka: Narok) (Anchor Bay) for 1.99 on play
Cannibal Holocaust 2 3.99 on play
Will see what else I can find.