Prime Members: 4-Count Brita Plus Water Filters $13.10 w/ Subscribe & Save + Free Shipping

Amazon has for Prime Members: 4-Count Brita Plus Water Filters on sale for $17.49 - $3.50 (20%) off when you 'clip' the coupon on the product page - $0.87 (5%) off when you check out via Subscribe & Save = $13.12. Shipping is free.