The New You Plan anyone done this

Hi,
Has anyone ever done the " New You Plan " its like a meal replacement programme and you get charged € 47.00 per week in Ireland its shakes, soups and bar and then you build up to full meals.
My sister in law did it and lost 3.5 stone so far in about 5 months she looks great and now a few people have said to me to do as it as I am bridesmaid for a wedding in 2016, I don't really think its for me as I like cooking and eating healthy meals I generally do the slimming world meals so I am getting to eat nice tasty food which is healthy but I was just wondering what people's opinion is on this plan the new you one ?

Thanks