Bests & Worsts Reviews from Amazon

Beware the real total cost of ownership when buying this product. These are great in the UK, where you can buy the gas refills (actually exchanges) in many supermarkets for not much money. However, in the US there are pitifully few outlets for the refills (Williams Sonoma and Camping World) and as such they are always out of stock. Because these gas cylinders have a proprietary fitting and anti-refill valve on them, they cannot be refilled at paintball, welding, or homebrew stores, so your only option is to mail them to Sodastream and obtain refills from the manufacturer directly. This adds up very quickly, and there is simply no way you can achieve the 20c per liter carbonation they claim here. The cheapest refills available from the manufacturer today are 3x14.5oz cylinders for $39 + $10 shipping = 41c/l. But since you have to have 3 cylinders first, you have to buy 3 more first (another $75 + $10 shipping), and these are their SALE prices. It's an interesting novelty and the kids love it, but when the first gas cylinder runs out, the soda cans on the supermarket shelves are going to look really tempting again. It's a shame, here's another great idea marred by poor execution. I can't see that there is anything 'green' about burning up so much in shipping heavy cylinders back and forth across the country.