Just purchased a Troy Bilt, 5550 watt from Lowes for a little over $700 with tax. I hope never to need to use it. Our power flickers on and off several times a week but fortunately it doesn't stay off for more than a few seconds. But, I am in an area subject to ice storms and strong winds. In 1998, the power was off for a full week but that was long before the SW tank. This is an expensive hobby and I look at the generator expense as one-time tank insurance. I also have car insurance, home owners insurance, life insurance and health insurance. Those premiums come to a lot more than $700 and have to be paid annually.