I have bought Suzanne Somers ice cream mix for an ice cream maker - you get two boxes (each has Vanilla, Mint, Chocolate, and Coffee), so you get 8 packages total for around $20. It has a couple of carbs per half cup (use heavy whip cream).

It is delicious when it is first made - but when you put the rest in the freezer it gets very hard (although it still tastes good!). I threw a few pecans in with the chocolate and it is great.