I don't know anything about this "diet" but I checked out their website and they promote the use of supplements, protein shakes, bars, and then other healthy food you can get in any grocery store. I think they are like Jenny Craig, where in the fact taht they want you to purchase the food,supplements, and shake mixes from them. Just as a money maker. Protein shakes sure they are good for you but I'm sure you can find the mix at a retailer for cheaper than they sell it.
The shake mix is 17.95 a can and you get a dollar off for each additional can you buy.
They are selling Meusli cereal for 12.95 a can!!! Thats outrageous!!
The plan itself doesnt seem too bad but you can do all this stuff yourself for cheaper

If your grocery store has a nutrition department you can even find healthy low fat low cal frozen entrees there.
HTH