Went to Asda to do a big shop as needed plenty of cleaning products, cereal etc.
I decided to do a whole shop there, the choice was VERY limited for organic partic meat and fruit, but what there is looks fine. TBH I buy a lot of my meat at the local butcher anyway.
SO - my usual weekly waitrose bill is about £140 (if I buy most of the meat there)
I did thsi Asda shop and it was £98.
Then I keyed every product into Ocado as I unloaded them to see what saving I had made. I used like for like and made adjustments wherever necessary (eg I got organic Lamb Chops 500g, waitrose only did 400g or something so I made up the difference proportionally by adding something else)
The waitrose shop came to £136
Quite a good saving really if you extrapolate it out over a year! Alos have discovered they will deliver for £4 delivery charge