For Pay per Kit subscriptions, your card will be charged when each Kit processes for shipment.
For Prepay & Save subscriptions, your card will be charged at checkout—which is when the first Play Kit processes for shipment. Once all of your prepaid Play Kits have processed, your subscription will automatically renew on a Pay Per Kit basis. If you'd rather continue on a Prepay & Save plan rather than a Pay Per Kit plan, you can prepay for more Play Kits in your Customer Account at any time.