I am a Bob Ross Certified Instructor and Artist in the Landscape Wet-on-Wet Technique. I took a 3 week course in New Smryna Beach, FL to learn the landscape technique that Bob Ross practiced. This wet on wet technique is done in oil paints. All painting are on 18×24 Stretched Canvas, and range in price from $100-$120 plus shipping and handling–click on image for price details–you can purchase here.