In the US, yes. Otherwise the goods will be shipped from other countries and it will often be impossible to return them or get refunds. Amazon does as little as

In the US, yes. Otherwise the goods will be shipped from other countries and it will often be impossible to return them or get refunds. Amazon does as little as it can get away with there. This is not by accident, since most people then choose the shipped&sold by amazon itself, of course potentially more expensive.