Some businesses, such as B2B, have to show VAT prices. However, there are certain cases where your government may require you to show prices including taxes, but you want your international customers to pay less than the VAT- included price. In those cases, you have to show two prices in your store. One is a tax-included price for your local customers and the other is a tax-free price for your international customers.
You should confirm that your tax settings are correct, before we implement VAT included price on your store. You can find instructions on how to do so by clicking on this link.