Square-Enix has announced that they have sold a total of 1.55 million copies of Final Fantasy Tactics Advance for GBA worldwide. 460,000 units have been sold in Japan, 760,000 units in North America and 330,000 units in Europe. In case you didn't realise, this is a very good number for Square-Enix, and it's definitely a good sign for their future.
Also, on a side note, Square-Enix has sold 51,291 units of their Game Boy Advance action adventure game Slime Morimori Dragon Quest since it's release on November 14th of this year. Again, another good sign.
[Source: The MagicBox]