The cost of replacing a chain on a bike can vary depending on several factors such as the type and quality of the chain, your location, and where you get the replacement done. Generally, the cost of a basic bike chain can range from $10 to $40. However, if you're looking for a high-performance chain or one designed for specific types of bikes (e.g., mountain bike, road bike), the price can go higher.
In addition to the cost of the chain itself, there may be additional expenses if you choose to have a bike shop or a professional mechanic install the new chain for you. Labor costs can vary depending on the shop and the complexity of the installation, but they typically range from $10 to $30.
It's worth noting that if you're replacing the chain due to excessive wear, it's often recommended to replace the cassette and chainrings as well, as these components wear together. Replacing the entire drivetrain can significantly increase the cost.
To get the most accurate estimate for replacing a chain on your bike, it's best to check with local bike shops or online retailers to see the current prices of chains and inquire about any additional installation costs.