How much does this cost to the nearest dollar?

Filters Fast FF 30901 Compatible Replacement for Hunter 30901 Carbon Air Purifier Filter, Air Cleaner Pre-Filter inch, Charcoal Odor Absorber 2-Pack
REPLACEMENT AIR PURIFIER FILTER – The Filters Fast air purifier filter is the compatible replacement for Hunter 30901. PREMIUM CARBON PRE-FILTER – The carbon filters the air, eliminates odors, and should be replaced every 3 months. COMPATIBLE WITH – The Filters Fast carbon air purifier filter is compatible replacement for QuietFlo, and compatible replacement for HEPAtech, and compatible replacement for Permalife. REDUCES HOUSEHOLD ODORS – The Filters Fast air purifier filter replacement contains activated charcoal which absorbs odors from pets, cooking, smoking, and more

Price is $18.00

Price: $17.95