http://www.nextag.com/uninterruptible-power-supply-ups/stores-html This website compares prices and specs for UPS. Use it as an idea for prices, as you can search around locally to see if you can find any good deals as well.
uninterruptible power supply
supply will increase.
If supply of a commodity decreases, the supply will fall. Prices and supply of good have positive relationship.
If the earth's supply of energy stopped, Caveman time!
It is not necessary in many cases, but in places like operating rooms and emergency rooms, power is absolutely required for lighting and running equipment. People would die if power went off.
To ground price will fall
Nothing... bad question!
it would probably go down
All the stupid people would die.
supply must shift up/left because at every quantity, the price would be higher
If people did not recycle, then the supply of plastic would run out much faster.
It would be broken back down to ADP