Not really in this case. In the past it was not a law everywhere (in Europe) that pricing must include taxes, and you could often get the "added tax" surprise.

Not really in this case. In the past it was not a law everywhere (in Europe) that pricing must include taxes, and you could often get the "added tax" surprise. This was then regulated to make it illegal. It's just that the US seems to take longer to get around to fix things.