Everything is negotiable however the Industry standard in Calgary is a 50% non-refundable deposit or reservation fee usually payable within 48 hours to 14 days of signing your agreement. Balances vary depending on the hypnotist. Some require full payment of the total amount upon signing of the agreement, others want the balance payment a week before the function, and others want payment the day of the function. These are terms you negotiate with the hypnotist.