The difference in cost of a Liquid Vinyl Siding application averages only 30% to 35% more than a regular paint job. Most of the cost of painting is for labor that can make up 80% to 85% of the total cost. The saying 'You get what you pay for' certainly holds true when dealing with contractors. You will find a huge difference between painting bids for the same project. Many factors affect the cost such as how thoroughly surfaces are cleaned and prepared, the quality of the paint and primer being used, whether the paint is being watered down, if surfaces are fully primed or not, etc. All of these are factored into the bid. Be leary of any painter that tells you that 'the paint contains primer' and priming isn't necessary for exterior paint. A regular paint job only lasts a year or two if it is not done meticulously using with high quality products. Labor cost to apply Liquid Vinyl Siding is comparable to painting since the application process is similar and it takes the same amount of time to complete the job. One reason for its higher cost is that three times as many gallons of Liquid Vinyl are needed for the job than conventional paint. As for the cost of the Liquid Vinyl product, it's in the same price range as a high quality paint such as Sherwin Williams Emerald or Benjamin Moore Aura.