Thumb Score: +16

Amazon [amazon.com] has 6-Pack ZeroWater Official 5-Stage Replacement Filter for $67.99 – 15% when you ‘clip’ the coupon on product page – 5% when you check out via Subscribe & Save = $54.39.
Shipping is free.

Savings
Save an extra 15% on your first Subscribe and Save order. (check and activate [amazon.com])