There is no comparison, when you factor in the Sprayer’s versatility. The cost of a Preval Sprayer is about the same cost as most aerosol paint cans–less than $10. But with the Sprayer, any paint can be aerosolized. One Sprayer can be used multiple times to spray numerous different paints. In addition, the Sprayer can accommodate 18 oz. of paint compared to aerosol paint cans, which normally contain 4 oz. of solvent, 4 oz. of propellant and 4 oz. of paint.