Free if you walk across the border and don't spend any money. But seriously the dollar is strong in Mexico, I'd worry more about the gangs.
If you mean Mexico the country, it has the Mexican Peso (1 dollar = 13.4 Pesos). If you mean the US state of New Mexico, it uses the United States Dollar.
Dólar
There's no such coin in Mexico. Please post a new question with more details as to what you're asking about.
Nothing... THERE ISN'T MEXICAN DOLLAR!!! In Mexico the currency used is the MEXICAN PESO.
Approximately 12.5 pesos per US dollar (June 2013).
Look up: Whats is currency US dollar to pesos.
Already has.
Approximately 12.75 pesos.
Yes. With an exchange rate of more than 18 Mexican pesos per dollar, most travel destinations within Mexico are at bargain prices (May 2017).
200 pesos in Europe; not mexico
no se