Amazon 現在Brita Standard Water Filter for Pitchers and Dispensers, BPA-Free, Reduces Copper, Cadmium and Mercury Impurities, Lasts Two Months or 40 Gallons 濾水器濾芯 4個 原價$21.79, 特價$17.99, 再用 Subscribe & Save 之後, 又可以有 5% Off, 最後是 $17.09, 節省$4.70(22% Off).