In June eXavier.com is having a special deal on .com.mx domains (the Mexican top level domain), where you can register a .co.mx domain for only $14.99/year.
.COM.MX can help your customers expand their reach with a uniquely Mexican online presence. Mexico has 27 million online consumers who are hungry for retail goods.
Looking at the latest statistics for .mx from Xavier Media Whois we’ll see that the number of hosted pages has been pretty stable which indicates not many companies outside Mexico has found this new market yet.