The price of a UPS is not necessarily what you pay for the electricity to run the device. There are many factors that go into the cost of running a UPS. The price of a UPS is based on the watts of power that the UPS needs to run. The more watts a UPS needs, the more expensive it is to run.
Many people think that UPS prices are determined by the amount of watts needed to run the device. This is not true. The wattage needed to run a UPS depends on the type of UPS that you are running. A UPS that is used to protect a computer will need more watts than a UPS that is used to protect a printer.