My center had a Storm seminar, whereby Ryan Shafer and one or two other persons from Storm had a question and answer session and later walked from lane to lane to give advice and tips to the participants. If you paid $199, you'd get a top-shelf Storm ball. Maybe the person called it a "demo day" instead of a "seminar."
Debbie
P.S. My son participated in this, and it was a waste of money.