If you get one, you can get the flavors from elsewhere at significantly cheaper
costs from sellers that have a much wider variety of flavors.
For example this place sells 2 liter jugs of flavor for $18, and they carry both Coke and Pepsi flavors. The sodastream flavors are $7 for 14 ounces. Basically you get 5X the volume for a little over 2X the price.