Use "Subscribe & Save" link to get free shipping and 15% discount!
Only $18.40 for Standard 2 pack!
LINK: Link: http://www.amazon.com/gp/product/B00008BFXL/ref=ox_ya_os_product
Just remember to (after your current order ships! *) go into you account and
cancel the subcribe and save to avoid future automatic shipments.
* If you cancel the subcribe and save before your current order ships it
will cancel the current order.