For a typical 400 square foot garage it will run about $1000 for the Granite look. It takes approx 3 days (depending on weather). There are a lot of variables in concrete floors and prep work will vary on different floors. We will come out and give you a free estimate and may be able to make suggestions in choosing the floor that is right for you. Thank you, Rick Rayment Phone 360-297-5557 E-mail Rick@creativeconcretecoatings.com