Several factors make an impact on the cost of installing a basement wet bar. You have to consider the quality of the materials, items you are planning to include, location of the wet bar and the alterations to be made. The expenses involved with installing a wet bar can be as little as $2000 and they may go up to $ 12000 when you make use of luxury items. The price of some of the high end wet bars can go up to $30000.