Amazon has LG LT1000P Replacement Refrigerator Water Filter (6-Month / 200-Gallon Capacity, NSF42, NSF53, and NSF401) on sale for $38. Shipping is free.

Product Details:

• Provide cleaner, fresher and better tasting water and ice for your family
• Removes 99.99% of cysts, 99% of asbestos and almost all mercury, lead, and benzene
• Filtration certification per NSF standards NSF42, NSF53, NSF401