The cost of installing a new dishwasher in your kitchen will depend on several factors. The cost of the dishwasher, set up, kitchen modifications to accommodate the dishwasher and final installation might range from $450 to $2,000 or more, depending on the amount of work and the specific dishwasher.f it will only cost about 50 percent of the price of a new dishwasher or less, then a repair is often more economical than buying a new dishwasher. Another consideration when replacing the dishwasher is the appropriate size of the dishwasher.