<prompt> Translate the following text to EnglishWamarekani wanaorudi nyumbani lazima walipe ushuru wa 10 kwa kila kitu kilichozidi 600 kwa ununuzi uliofanywa nje ya nchi, lakini ushuru wa forodha wa Marekani ulioongezwa kwa bei ya bidhaa bado unaweza kuja chini ya kile ununuzi ungechukua huko Boston au Chicago.  <response>: While Americans returning home must pay 10 duty on everything above 600 worth of purchases made abroad, the US customs levy added to the price of an item may still come to less than what the purchases would cost in Boston or Chicago. 