Vipassana S. N. Goenka speech (Q&A) at Harvard Business Club 2 of 2

Vipassana Teacher Acharya S.N.Goenka’s speech at Harvard Business Club in Newyork, August, 2000.
Section 2 of 2: Q & A Section.
1) I’m quite happy in my life, why should I meditate?
2) Why the course duration is 10 days but not shorter?
3) How does Vipassana help depression person?
4) Do you still practice meditation?
5) How much does this technique cost?