The exchange is from dollar tourism sale closed most recently at 17 pm, from the last or current business day according to the day of payment and indicated on the website:

In case of cancellation, the support services, consultancy, tips and information of the independent trip provided, in its initial or later stages (equivalent to an advance of US$ 400 for the first Traveler and US$ 300 for each of the next Travelers), can be used in the future without further charge, and thus is not refundable.