There can be many factors that go into the cost of both replacing and repairing garbage disposals. On average, you will likely spend $185 to $380, but it can be as high as $600. Generally speaking, with garbage disposals, you really get what you pay for. A lower-cost model may not last as long, require more water, clog easily, and make more noise. On the other hand, a repair can be about $250, but your plumber will guide you in what’s best.