There are 218 calories in a shake, and from what I understand Slimfast is not to be used in that manner because it is not nutritionally complete and is too low in calories.
Yes it's not meant to be used as a liquid only diet (like Denise said it's not nutritionally complete and you'd end up having too much sugar), although I have heard of people do this (having 4 shakes a day) but they didn't lose weight any faster than those of us using slimfast on the proper plan. Plus we get to eat!!
How expensive does it work out? I've been thinking about doing it but i think it might cost a lot...I know people say 'it will be worth it in the long run' But i don;t physically have much money atm!
It's cheaper to have slimfast for your two meals a day than the food it takes to make your meals. I use a can of powder in about 6 days. That's about £4 for 12 meals. Oh, plus your milk. I also buy the Tesco own brand of Slimfast which is about a pound cheaper. I'd say it is the least expensive diet I've ever tried.
I don't believe people don't like the meal bars! When I tried Slimfast before they were my downfall, I'd stock up and then eat a load at a go. Next time I won't buy them, I'm sticking to shakes. I don't like them much so I won't be tempted to have two.