I call it capitalism. Basic economics drive the price.
Some people in Toledo were prepared. Others had to pay a higher price for bottled water because demand went up and they couldn't use the municipal water for drinking. The demand for bottled water went up...the supp;y stayed the same. ergo the price increased. This is a basic supply/demand/price equation I learned in Econ 101.
Some merchants drove many miles to find a supply of water....who pays for their time and fuel they invested to meet a need?
If they had paid for the water and couldn't sell it, who would reimburse them for their investment (and loss?).
If these people had bothered to have a weeks worth of water on hand, they'd not have had to pay a higher price for their water.
Much like people bemoaning the increase in price for plywood before a hurricane (and the increase in price for gasoline after) demand increases the price....as it should.