Why do most tour groups have such a large number of people?

This is how the tour company makes its income. I could have taken more people in previous years. However, I want these trips to be the best possible experience for everyone involved, and so the number will always be limited.  I want those who are very committed to the Lord to experience the “Holy Lands.” Tour companies generally reserve the right to cancel the trip or increase the price if at least 25 or 30 people do not sign up. In contrast, I do not charge extra for our small groups and, in fact, took two groups in 2011 rather than allow either group to be too large.