Make sure the Subscribe & Save option is selected on the product page. https://amzn.to/3uo9I1t
'Clip' the 20% coupon for your first Subscribe & Save order.
Note: Must be logged in to clip coupons; coupons are typically limited to one per account. If you can't clip the coupon on the product page, try selecting "One-time purchase", add to cart, select S&S option and clip coupon in cart.
Select any frequency, then click 'Set Up Now'.
Price will be $10.99 - $2.20 w/ coupon = $8.79.
Complete your order.
You may cancel Subscribe & Save anytime after your order ships.