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. Depending on what type of plan you set up, your subscription will either automatically renew as the Prepay & Save bundle or it will update to charge your card when each individual Play Kit ships.
Following the end of your Prepay & Save bundle, depending on your selection, your subscription will either continue as a Pay per Kit subscription, or as an Auto Prepay & Save subscription. You'll be charged at the intervals described above.