Be Sure to Apply for the US Electronic System for Travel Authorization (ESTA) on the Official US Government Website

- Overseas agency sites charge 4-6 times more than the official fee (USD 21) -

In principle, a visa is required to visit the United States, but travelers visiting for the purpose of tourism etc. for a period of up to 90 days can visit without a visa by obtaining an Electronic System for Travel Authorization (ESTA). However, consumers are advised to be careful as there have been complaints about being charged excessive fees for ESTAs issued through overseas agencies rather than through the official website of the U.S. Department of Homeland Security (esta.cbp.dhs.gov).