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Amazon [amazon.com] has LG LT1000P Replacement Refrigerator Water Filter (6-Month / 200-Gallon Capacity) for $ 38 – 20% when you ‘clip’ the coupon on product page = $ 30.40. Shipping is free.

Price:
$ 21.71 lower (42% savings) than the list price of $ 52.11
20% coupon applied at checkout. Subscribe & Save orders only.