In Ohio all laser treatments other than laser hair removal must be administered by a physician, so they may cost a bit more than states where physician extenders can perform the treatment. The cost is usually $300-400/treatment. Most patients need 3-5 treatments, one month apart.
This really depends on a variety of factors, such as the city you're in, the technology used, and the area you'd like to have treated. Generally, in Toronto, Ontario, you can expect to pay around $300 for a session targeting the face.