It can cost anywhere from a few hundred dollars to over a thousand dollars to unclog a main sewer line, depending on the extent of the blockage and the type of plumbing equipment that needs to be used. Generally speaking, it's best to call in a professional plumber rather than trying to fix the problem yourself, as improper methods could potentially damage your plumbing and lead to even more costly repairs.

It typically costs about $200 to have a professional unclog your main sewer line. However, the cost can vary depending on the severity of the clog and the type of service used. For example, if you need a plumber to use a snake to clear the clog, it will likely be more expensive than if you just need a technician to come out and use a hydrojet.