Jet card
A jet card is a prepaid charter product: you deposit a sum (typically $100,000–$500,000) or buy a block of 25, 50 or 100 hours at a fixed hourly rate for a given aircraft category, and draw it down flight by flight. Cards usually promise guaranteed availability with 24–72 hours' notice, fixed rates that shield you from spot-market spikes, and no repositioning charges within a service area. The price of that certainty is a higher hourly rate than ad hoc charter, peak-day surcharges, expiry dates on unused funds and fine print about the operator's right to substitute aircraft. Cards suit people flying 25–75 hours a year on short notice; occasional flyers usually do better with ad hoc charter.