The answer to 'how much does garbage disposal cost' is that the cost can vary widely depending on several factors. Typically, a basic garbage disposal unit can range from $75 to $300 for the unit itself, plus $100 to $300 for professional installation. However, more advanced or high-end models can cost $500 or more.
The final cost will depend on the size and power of the disposal, the brand, any additional features, and the complexity of the installation. Older homes may require more extensive plumbing work, which can add to the overall cost. It's best to get quotes from local plumbers to get an accurate estimate for your specific needs and home setup.