How much does this cost to the nearest dollar?

Greenwave Dirty Electricity Filters 3 Bedroom Home Kit (16 Filters)
Greenwave filters reduce unhealthy DIRTY ELECTRICITY in homes and other buildings. What Is Dirty Electricity? Dirty electricity is erratic spikes/surges of energy traveling along power lines and wiring where only standard 60Hz AC electricity should be. It is created by electronics, energy-efficient lights, and many other devices, as they manipulate electrical current to operate. Dirty electricity can circulate throughout a building and to other buildings, radiating potentially harmful EMFs as it goes. It has been associated with health problems and can interfere with the functioning of sensitive equipment. How Greenwave Filters Work Greenwave filters use state-of-the-art EMI filtering technology to reduce the level of dirty electricity present on wiring in buildings. The less dirty electricity there

Price is $509.00
Price: $509