The answer to 'how much does shut-off valve cost in Chicago' is that the cost of a shut-off valve can vary significantly depending on several factors. Generally, you can expect to pay anywhere from $50 to $300 or more for a shut-off valve in the Chicago area.
The cost of the valve itself is just one factor that affects the overall price. Installation costs, labor rates, and the complexity of the job can all impact the final price. Shut-off valves for larger pipes or those that are harder to access may be more expensive. It's best to get quotes from local plumbers to get an accurate estimate for your specific needs.