Bitso is a Mexican Bitcoin exchange that operates a BTC/MXN market with support for instant deposits and withdrawals through Mexico's SPEI banking system.
A buy/sell order is executed partially or in full when the price bid can be matched against a sell/buy order that is at or below the bid amount.
There are no fees incurred when when transferring bitcoins for deposit. Funds are available once confirmed (4 confirms), a process that can take roughly 40 minutes.
Exchange accepts MXN deposits via SPEI transfers.
Charging a flat $8.00 MXN deposit fee
SPEI withdrawals are charged with fixed $8.00MXN fee.
Bitso charges a trading fee from each party of successful trades made through the market. The amount of the fee will vary based on a 30 day trading history. The rate for new accounts and those with the lowest volume is 1%. Refer to the  to determine discount levels.
Access to an account may be protected with the optional Two Factor Authorization.
The site has support for various languages:
API is available https://bitso.com/api_info?l=en
It mirror's Bitstamp's API
- Dojima market client
The exchange was announced on April, 2014. Bitso.com is owned and operated by Bitso S.A.P.I. de C.V. and based in Mexico City, Mexico.