Possible, but unlikely. Some of the reasons the cost is so high may be due to the limited market and validation testing, since it is EPA registered. Also keep in mind, cost of operation and potential pitfalls - battery usage, malfunction, does not work well in cloudy water and does not remove chemical contaminates, Also don't forget where there is no water, i.e. the lip of the container, sterilization does not occur. Don't get me wrong, I have one and use it, but only as a backup to filtration. I find it more useful in a travel situation where the water is visibly clear, but may have biological contamination or after filtration to ensure safety from viral contamination, when the filter does not have a viracidal component. I was lucky to have gotten mine from REI, when they distributed dividends and provided a 10% discount if you used your dividend. Pete
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