I tried to do a grocery shop on-line a couple of times - it was horrendous and only then did I realise how many brands and variations of the same brands are out there. Under each 'product' eg: shampoo or dog food or tinned peas, there were dozens and dozens brands and brand variations. It took ages, hours to go through the lists and tick which product I wanted, quantity, size etc. Eventually I gave up, got in the car, went to the supermarket, grabbed what I needed and was out of there in 45 mins! Won't be doing that again.