Actually, it is a default functionality. This price filter doesn’t work on the gross and net prices. But the smallest price of the product is in the particular category to the largest price of the product. This is how it works and you cannot change it from theme options because there is no such kind of feature available in the theme, changes require customization.
Sometimes, but not always, you need additionally customize the theme or plugin and additional customization is outside the scope of our basic support.
If you want paid Customization services submit a customization request to WPKraken team.
You can submit a request here https://www.8theme.com/taskboard/, so our dev team read it.
Regards 8Themes Team.
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