Amazon has currently got this marked down to $6.99. Checkout via Subscribe & Save for a total of just $5.94-$6.64 w/ free shipping.
— Remember, When checking out with Subscribe and Save, you are under NO obligation to continue your subscription whatsoever, and can cancel at anytime. Even if you forget to cancel, Amazon will not ship any future shipments without first sending you an email giving you ample time to cancel if you so choose. Subscribe & Save can be cancelled via the manage your subscriptions page.