For a Pay per Kit subscription: You'll be charged on the stated billing date for each Kit, but you can choose to prepay and save on your subscription at any time. Log in to your account, click Account Settings, and scroll down to Manage Subscription. You'll see a link to Prepay & Save Now. You'll be charged immediately at checkout with your current payment method on file.
For a Prepay & Save subscription: When your bundle concludes, your plan will automatically update to a Pay per Kit plan. However, you can prepay and save again on your subscription at any time. Log in to your account, click Account Settings, and scroll down to Manage Subscription. You'll see a link to Prepay & Save Now. You'll be charged immediately at checkout with your current payment method on file.