In Guatemala, $2000+/month for a good developer is "normal", if a bit low. Low end is around $1500 or so. $3-4K a month is not unheard of. It's one of the better paying jobs.

And the consulting firms don't magically charge less because they're in Central America. You can still get PWC to fill a room with $300+/hr people. That's not just technical people, but also project management, as you'd expect.