The cost of having a suit cleaned varies greatly by location and the company doing the work, with 2014 prices ranging from $9 to $13. In dry cleaning, price is not always an indicator of the quality of the service.
Dry cleaning a suit too often is just as bad as not cleaning often enough, as dry cleaning solvents cause the fibers that make the fabric to wear more quickly than normal. Brushing and hanging suits after wearing reduces the need to clean the suit to twice per year. For longest life, allow the suit to hang a minimum of a day before wearing it again.