For one?
What, that’s not good enough for you?
Water doesn’t grow on trees you know, bud.
It comes with a flip cap!
For that price it better be some magical tree water. 
It seems to be one of those listings that used to be for a multi-pack, then Amazon started breaking up the multi-packs to sell single units from that listing, without modifying it or changing the product copy. Happened a bunch of times to me over the last 1-2 years, particularly with food/consumable items on the main site.
It’s got what plants crave.
Maybe one of the minerals in it is Gold?
Very holy water!
These monkeys are being evil.
This place use to be fun, with bargains to found.
Now there are landmines and booby traps everywhere. 
Stay safe ya’ll.
This is some good water but I don’t know about $30 good for one bottle
The reviews mention 3 bottles lol, so only $8 per I guess? It would be nice to know how many for sure bc flip caps.
The Icelandic 1L bottles are the best though because they have an attached cap (like in Europe).