This is a point that is all but forgotten by the modern church. This is a shallow view of the work of evangelism compared with all the great moves of God throughout history and the ministries of the men who have led these movements. John Wesley, for instance, preached the gospel to the poor and wretched - the outcast of society. He preached the free grace of God and salvation through the blood of Jesus Christ by faith. Half of these members polled attended church at least monthly.
Cheap grace means grace as a doctrine, a principle, a system.
An intellectual assent to that idea is held to be of itself sufficient to secure remission of sins. Cheap grace means the justification of sin without the justification of the sinner. Grace alone does everything, they say, and so everything can remain as it was before. Cheap grace is the preaching of forgiveness without requiring repentance. The price we are having to pay today in the shape of the collapse of the organized Church is only the inevitable consequence of our policy of making grace available to all at too low a cost.