Costs for SodaStream As mentioned in Marshall’s message, you can purchase a SodaStream machine for $80. After that, you can purchase “cola” refill kits for $5. A single “cola” refill kit costs $5 and makes 12 liters of soda.
Costs for buying Coca-Cola My local store regularly offers a dozen 12 ounce cans of Coca-Cola for $3. This is 4.25 liters of soda for $3.
Cost per liter The cost per liter for SodaStream cola is $0.40. The cost per liter of Coca-Cola is $0.70. Clearly, the SodaStream is going to be cheaper over time.
How much soda do you have to drink to make up for the initial cost? You save $0.30 per liter of SodaStream cola that you drink versus Coca-Cola. The initial cost of the machine is $80. Thus, you’d have to drink 267 liters of soda to make up the initial cost.
Wow. That’s a lot of soda.
To put that in perspective, a twelve ounce can of soda is 0.35 liters. You would have to drink roughly 762 cans of soda for the machine to start being worth it compared to buying Coca-Cola in the store.
Simply put, for this machine to pay off, you have to be a high-throughput soda drinker. There are no ifs, ands, or buts about it. You have to drink a little over two cans of soda a day for a year to get past that point.