I am usually a pretty cheap person when I buy things, but when it came to a heated waterer, I was much more concerned about the reliability of the product. My 3 gallon metal waterer and heated base cost me about $70 for the pair, on sale, at our local farm store. I know some people just use a heated dog bowl for much less money, but I don't trust the heated dog bowls for my area and our temps. I am constantly looking for the metal heating bases to go on sale again and I will buy a backup - but maybe I'm just paranoid about having fresh water always available.