There are a few different types of dishwashers, which vary in price. The most common type is the built-in dishwasher, which ranges in price from about $250 to $1,000. Portable dishwashers are less common, but are typically less expensive, costing between $100 and $500. Finally, there are commercial dishwashers, which are the most expensive, costing anywhere from $1,000 to $5,000.