Never do your weekly shop hungry - you will buy (and waste) far more than you would if you went on a full stomach - try it and feel the difference (in the pocket and around the waiste)!!!

I shop online weekly, now i stick to my budget, don't impulse buy, and I can update it the night before delivery to take off items i don't need and add on things i've forgotten, saves me around £30 a week so it's well worth the £4 they charge, also don't have to drive to supermarket or spend up to two hours trudging round looking for it all, personally i'd pay double !!