If you want to do like Batman, here is a nice replica of a Batarang. It comes with a display, but I do not advise you to launch it on anyone ... let the settling of accounts to the real justiciers.
Since the law of July 1, 2021, we must charge VAT according to the country of destination of the goods. By default, the site assumes that this is France. But if you are in a different case, you can change the display by entering your delivery address.