Adding 30% to the price and selling the thing to 27 countries all having a different tax policy in the name of "languages" (wait, I thought salaries were not at

Adding 30% to the price and selling the thing to 27 countries all having a different tax policy in the name of "languages" (wait, I thought salaries were not at issue) or "taxes" (wait, vat is different in every country, and nowhere it is 30%), do you think it's worth anything more than simplistic analysis? Do you think anything more than simplistic thinking leads to changing the dollar sign to the euro sign?