Price Settings: Price Display Options
You can use this panel to set whether the prices shown on your store should be inclusive or exclusive of tax (a full summary of the order price, including tax, will be shown during checkout). If you choose Exclusive of Tax and then view a product's Details page, both the inclusive and exclusive price will be shown. This ensures that your products will always comply with the Google Shopping Program Policies. Failing to comply with Google's Policies can cause your products to be disapproved.