I saw on the classifieds a dealer is selling het for sulfer waters for a grand each...... Now there might be a possibilty that sulfer is a reccesive gene but it has not been proven to breed out that way yet...... There is no way to know for sure until those babies are bred out..... In can be a locality spacific trait that my have worked out better than the "wild gene" on those particular islands but like I said before, there is no way to tell that yet...... Just be careful what you buy into...... You might be buying a regular water for a thousand dollars.....