I have not run the numbers, but would guess that it is cheaper to make your own coffee creamers, hence this post.
UPDATE: it is much easier and better tasting to just take and fill a coffee cup with 1/3 ice cream, 2/3 coffee, and stir well; then reheat and stir again. Or blend in blender. Nothing else is really needed. Have tried a little milk and sugar and/or extracts, syrups, etc., but just ice cream gives the easiest and best results. Try Pumpkin and other season flavors to go beyond a basic French Vanila. Additionally, to top it all off, take a small scope more ice cream and plop it in. Go crazy and sprinkle cinnamon and brown sugar on top of that.