On Sunday, December 31, 2017, the price of the dollar in Mexico was quoted at an average of: 1 Dollar = 18.9451 Pesos BUY19.1743 SELL18.7159 -0.2500 %-0.0476Dollar Price in Mexican Banks BUYSELL19.8019.8018.5020.0019.221319.621319.1719.9218.5519.9518.8620.0519.1019.9019.4019.8319.3519.9518.5519.9519.2520.2518.4020.1719.1020.10