Ah I see. That's one that uses natural gas, and you have to deal with the venting and all that stuff. As for cost, I'm in NE FL where electric is most common. A 70 Gal electric heater runs about $675 at the local home depot here. Also, their labor charges are excessive and to have that particular one installed through HD would be over $1K. I use a local plumber and electrician for all my rental property needs on that front, and the labor is noticeably cheaper. Last one I had installed was about 2 years ago and with labor and all, including hauling off the old one, came to around $875.
I suspect you're up north where power failures in the winter could lead to frozen pipes, thus making NG the more common sense route. Especially if NG is used for heating the house too.
