You can get the current pricing for the EKO line at http://www.cozyheat.net. I'm only providing that link because it's the only place I know of that posts the prices. There are other dealers selling EKOs around the country. I cobbled my tank up from an old concrete cistern in my basement. And I'm about finished building my heat exchanger, which is made of rigid copper. If you bought them retail, a 1,000 gallon tank and heat exchanger would probably set you back around $5,000. Maybe more. I have a lot of hours, but only about $1,000 in mine. And yes, getting everything piped up involves extra expense and time.