Mind you, when I'm eating 'normally' we usually have a takeaway at LEAST once over the weekend, which usually sets us back about £20 a time, so I suppose when you look at it like that it's probably cheaper for me to be following ww.
Don't know about the weight watchers thing, but the £20 will buy your fruit and veg for the family for a week
Though I don't think it's that much more expensive to eat healthily, I do realise that it's much harder work.
Buying prepackaged fruit and veg = expensive. Buying loose from a market or growing your own = cheap.
People buy expensive boxes of cereals, or oats-so-simple, when a big bag of porridge oats is much cheaper. Lentils = dirt cheap. Add to meat dishes to reduce costs.
Eggs and milk = cheap.
I saw dried fruit to top cereals and dried apricots in tesco on BOGOF this week.
I also bought loads of bananas for a pound from the market at the end of the day. Left some out, put the rest in the freezer for smoothies.
Remember the slow cooker is your friend. It will turn tough meats unto a meal that will melt in your mouth.
Tinned toms often on BOGOF = healthy and cheap.
Baked beans (yuck) = cheap and healthy.
Real potatoes cheaper than ready made chips.
Olive oil = much cheaper in aldi or lidl and just as good. Same goes for parmesan. Can be frozen. Much better than that awful stuff you buy in pots that smell and taste like unwashed feet.
It can be done. My shopping bill is the envy of all

..but yes...somethings do take longer to shop for and prepare.