At some point, even hoarders realize enough is enough.
My wife and I both drink alkaline water, Costco started carrying a Kirkland brand just over month ago. It’s about half the price of discount grocery stores. We keep a 1+ month supply on hand. It comes in 18 one liter bottles to a case. My wife drinks a lot of unsweetened tea plus about one bottled of alkaline water. I go through 4-5 bottles of allaline water per day; just over a gallon.
Very refreshing and no negatives of sodas.
I have an RO filter with an alkaline cartridge. Seems to work pretty well, and it’s much cheaper overall. If we need bottled water, I prefer the 2000 gallon size, but we would probably head to the hills if if got that bad.