Answer: When you go shopping with housemates who will struggle to make a decision between two kinds of soup, with 1p difference and spend 30minutes making a choice of fruit and veg!
Yes, we did spend over £200 between the four of us, and yes, it did take 90 minutes (it's only a Tesco Express too!). My shopping filled 3 bags, but between the four of us, it was two trolleys full which we then ended up taking from the supermarket, walking 500m down the main road to home :-)
