I know them - I purchased one of the popular 20x20 car ports from Carolina Car Ports in 2003 - paid an additional 100 bucks to get 1 foot taller frame, a year later I purchased some color matched panels from metal depot in Albany to close in the sides all the way to the ground and the back wall...
5K - I assume that is the price for the building assembled (not including the slab)? I am north of Baton Rouge so I will be interested in the company you purchased from and the details - once you get comfortable with endorsing.