Staples also does it, sometimes other stores are out of stock of new ones, but staples stays pretty on top of it from what I've seen
https://www.bestbuy.com/site/reviews/sodastream-60l-exchange-carbonator-multi/7008419 I hope this helps you out. If not, definitely try Wal-Mart. They are the treasure valleys largest soda stream distributor.
Thanks! Your answer is awaiting moderation.