In Makro they have the big 90 wash boxes of Persil (colour/bio/non bio) for £9.99 + vat (£11.73 in total)
A bargain if ever I saw one.
BUT....just to make it even better...they also have these size boxes with 33% extra free for the same price which is a mahoosive 120 wash size. I couldn't even lift mine up, lol. It's one of their special offers this week so plenty of them.