Fat is an important macro nutrient. You want to eat lower fat but not remove it all together as it is essential in metabolizing certain Vitamins and nutrients such as Vitamin D. Be leary of any nutritionist who does not have you eating fat or carbs. Key is moderation and balance.
I can buy sample sizes of many flavored here at Drug Emporium. I've tried several pre surgery and liked them well enough. Waiting to get past my 2 week clear liquid post surgery stage to try them again.