On the Ocado website, there's a page where you can view all their latest special offers. Currently, 22 items are displayed and there's a button at the top that says "Add everything". This saves a customer from having to worry about the prices or the exact nature of the products they're about to purchase.
If I clicked "Add everything", I'd no doubt be guaranteeing myself some remarkable savings. The trouble is, I don't necessarily want Sure Active Response for Women Cotton Fresh Spray, Pampers 60 x 60 cm change mats, half a dozen one-litre bottles of Badoit mineral water and eight blueberry flavoured Actimel bottles.