How much does this cost to the nearest dollar?

Atmor ABC (24Kw)
Atmor 24kW 4.65 GPM Electric Tankless Water Heater, ideal for 2 bedroom home, up to 5 simultaneous applications Perfect for low flow single sink applications in moderate to warm climates with inlet cold water temps above 57 degrees For optimal heating a 0.5 GPM is required. 0.5 GPM = 45 degree temperature rise Unit requires a dedicated 30A single phase breaker, 10 AWG wire (line, ground, neutral) and 110V service. This is NOT a plug in unit Includes a 0.5 GPM Aerator for sink faucet and Pressure Relief Device (PRD) Brand Atmor, Capacity 4.65 Gallons, Power Source Battery Powered, Dimensions

Price is $420.00

Price: $419.99