oftentimes you can go with a number of different finishes, different styles of materials. You can do wallpaper, you can do molding, you can do different finishes of molding, do you want to paint grade or stain grade? Do you want to do clear siding or do you want to do paint siding?, the choice is yours. The finish. What type of finish do you want? A semi gloss, a flat finish, or an eggshell finish? You'll find that costs will vary wildly. Once you start making those selections, you'll start to get actual numbers. So you'll get a number of bids from a number of contractors. You pick the contractor which suits your needs, you pick the materials that suit your needs and wants, and then you'll come to a final price. I hope this helps.