Found 21st Jul 2017
Have noticed that 2 for £10 and 3 for £20 DVD and Blu-Ray offers are back on Amazon, with some quite recent titles on offer (Fury Road Black and Chrome, American Honey etc). Even better than that though is a lot of the titles exist in BOTH promotions. So, that weird discount quirk is back, where if you add 5 or more titles from both offers, it gives an even larger discount when you checkout. Just used this to get five decent titles for just under £4 each! Thought this might be of use to others.