Personally, I wouldn't spend the money for an electric baby food grinder. Use a blender or food processor that you already probably have. I raised my two girls on home made baby food and even wrote a book on it and all I used was those two appliances.
Cathe Olson, author The Vegetarian Mother's Cookbook, Simply Natural Baby Food, and LIck It! Creamy Dreamy Vegan Ice Creams Your Mouth Will Love.