How is using treadmills less expensive than going to the fitness center?

Using the top best treadmills for seniors to do regular exercise is more economical than going a real gym. Also, they are much less expensive than going to a traditional gym. The best treadmill brand can be used for running, walking, and other cardio activities.   Viisrt this site https://inonefit.com/best-treadmills-for-seniors/