USA ESTA is the online system which tells you earlier whether you are suitable to travel to USA under VWP. It replaces the old system that was to fill out the piece of green I-94W paper on the plane to the US. By having this method, you would only get out on the arrival when US security decide you did not fit under VWP. This can also be on the form you were to fill and also any further questions that they may ask.
Now travelers are required to complete the USA ESTA and then know beforehand whether they are qualify to travel to USA or not, minimizing the probable loss of the hotels, plane fares and many. The USA ESTA is needed for everyone who enters the USA by sea or air. If you are crossing the land border, through Mexico or Canada, then you will be required to complete the handwritten I-94W form, which cost $6 for every person, lest you have already the approved USA ESTA.
It is important to know well that when applying for the ESTA, it does not mean you are automatically permitted to enter USA. It is only established that you are qualified to travel there. Only the US Customs and the Border Protection officer can choose whether you are actually permitted in or not. He/ she can choose that you do not fit VWP standards after all. It is completely at their own discretion.
USA ESTA applications have the $14 fee which is attached to them and which is $56 for the family which has four members. $4 will cover the USA ESTA administration and $10 will goes to fund for the promotion of US tourism. Essentially this is not the visa charge for the entry, it is the charge for you to get permitted to enter this country.
You can avoid the foreign exchange card charges. The system actually accepts the payment through PayPal, Discover which (Diners Club, JCB). Visa, MasterCard and American Express. If the USA ESTA's have been rejected, you can also be charged $4 for applying.
Many of these type of the plastic have hidden charges like adding the 'load' to the exchange rate once you have spent, and also charging the interest from a time you make the transaction. You may beat this through the use of specialist foreign expenditure card that will penalize you. For all these recent top cards, you can get to know thought the credit travel card guide.