The answer to 'how much does shut-off valve cost in my area' is that the cost can vary significantly depending on several factors. Typically, the cost of a basic shut-off valve can range anywhere from $10 to $100 or more, depending on the type of valve, the material, and the complexity of the installation.
The location of the shut-off valve, the accessibility of the plumbing, and the need for any additional plumbing work can all impact the overall cost. It's essential to get quotes from local plumbers in your area, as they will be able to provide a more accurate estimate based on the specific requirements of your home.