I used to get a lot of Wish adverts on Facebook, offering products that had varying degrees of absurdity that made me question who on Earth Facebook thought I was. More recently I started getting adverts for Temu - a site I had never heard of before, but the bright orange logo haunted my social media steps. Looking at it, I couldn't quite believe the prices - was it really going to be less than £3 for shoes, less than £6 for a dress, mere pennies for stationery? Seemingly, the answer was yes, the prices really were that low, but...