Disappointed, I guess in myself. I thought I was ordering 2 carbonators to exchange for the 2, I have, one empty, one nearly empty. I was checking several sites and thought I was comparing equal packages between Amazon and Walmart, thinking Walmart's price was $8 less. The delivery was delayed from promise dare, but that's typical of FedEx in my experience. Just shocked there's only one. Went to check and, yup, I ordered one think ing it was 2 for the 2 price. Looking back, the package of 2 is same price give it take a penny as it is on Amazon. I would normally buy Amazon bc I get good rewards from our purchases there. Anyway, ran out of carbonation in the one I had on hand, so I'm using it bc I don't have carbonation otherwise.As a result, I'm paying more than $13.00 for the single carbonated with exchange. I used to get these changed for $12.00 using a coupon at BBB or $15 at Walmart (in person at the store) Next time I'm going to be very careful to click on the package of 2, no matter where I'm buying them from.