How much does exterior paint cost?

How big is the house?
What kind of surface is to be painted?
When was the last time it was painted?
How many coats of paint does it need?
What kind of prep work does it require?
Will the colors stay the same or change?
Are there underhangs and tall peaks?
Does it need to be power-washed?

Can't answer with knowing these factors.

Generally, a typical exterior ranges from 1,500 (very small home with minimal prep work) al the up to 15,000 (for large old homes that require lots of restoration work, etc).