I just went thru this whole process, so I'm very familiar with the prices and installation. We are a family of five, lots of showers. So we got the 80 gal. one from Home Depot for 400.00. But its not the water heater that is the expense, its the installation. Don't be so quick to go with the people from the store to install it! Very expensive. Do your research and ask around town for local plumbers. We luckily know a guy here in town who does plumbing for his "side job", but is licensed and charged us 125.00 for the whole job, a far cry for what they charge at Home Depot etc. But you need the expert for this job, don't try to wing it.