Aldi carts are lined up and chained together outside stores. When you insert a quarter, it unlocks the chain. When you return the quarter, it's returned. "Lend us a quarter and we'll lend you a cart," ...

Is it fair? And if so, how much should they contribute? Let us know in the comments above. Tesco launches rival to Aldi's family Christmas dinner - with offer for £1.84 a head The daily battle ...