Sports programming is also featured on some premium services; HBO was historically known for its broadcasts of boxing, while Showtime and Epix also carry mixed martial arts events. Some general interest premium channels have aired other professional sporting events in the past: HBO for example, carried games from the National Hockey League (NHL), National Basketball Association (NBA) and American Basketball Association (ABA) in its early years, and from 1975 to 1999 aired the Wimbledon tennis tournament. Specialty pay sports channels also exist—often focusing on international sports considered niche to domestic audiences (such as, in the United States, cricket), and are typically sold at a higher expense than traditional premium services. Out-of-market sports packages in North America are multi-channel pay services carrying professional or collegiate sporting events which are sold in a seasonal package. They are typically the most expensive type of pay services, generally running in the range of $35 to $50 per month.