I appreciate your input. Originally my doctor prescribed it for me. We tried Costco Pharmacy and two local pharmacies. None had nebulizers or the saline solution. Finally, pharmacist number 3 suggested that I try Amazon Prime, which I did. So, that's where I have gotten it and it really isn't very expensive. My only problem is that the supplier kept indicating that they only had 7% available and asked if I would take a substitute for 3%. They never seemed to get 3% back and I find the 7% too harsh to deal with. Now, I have a suggestion as to how to dilute it, so that will be what I do if I go back to nebulizing. Right now, I am not using it and seeing how I do without, but I do like having that option. Thanks again!