The answer to 'how much to fix drain' depends on several factors, but you can typically expect to pay anywhere from $150 to $500 to have a professional plumber fix a clogged or backed-up drain. The exact cost will depend on the severity of the clog, the location of the drain, the materials and tools needed, and the labor required.
For a simple clog that can be cleared with a plunger or drain snake, the cost is usually on the lower end of that range. However, if the clog is deep in the pipes or requires more extensive work like pipe replacement or sewer line repair, the price can be higher. Factors like the age of the home, the type of plumbing system, and whether any additional issues are discovered during the repair can also impact the final cost.