How much does this cost to the nearest dollar?

WaterChef MSWF Refrigerator Water Filter Replacement for GE MSWF, WQA Gold Seal Certified, WCG-18
Experience the Difference of WaterChef Refrigerator Filters! Premium Refrigerator Filtration for Less WaterChef Premium Refrigerator Water Filters provide you and your family with great tasting water from you refrigerator for less! WaterChef Premium Refrigerator Filter Replacement Cartridges utilize high purity, activated carbon block technology, are Tested & Certified by WQA (Water Quality Association), and have a capacity of 300 gallons or up to 6 months per cartridge under typical water quality and usage conditions. WQA Gold Seal Certification - Trusted Performance! WaterChef refrigerator filters are WQA Gold Seal Certified for NSF/ANSI Standard 42 for chlorine reduction, material safety and structural integrity. Guaranteed Fit and Quality

Price is $18.00
Price: $17.95