The overall cost to install a drain can vary based on several factors. This includes the complexity of your drain installation, and the type of drain you need installed. On average, you could be looking at anywhere from $200 to $500 for a basic drain installation. However, for more complex jobs, such as replacing a main sewer line or installing a more advanced drainage system, you should expect costs to be much higher. It's always best to get a quote from your local plumbing company to get an accurate estimate based on your specific needs.