How much does this cost to the nearest dollar?

HQRP 8-Pack Carbon Filter Intended for Holmes
HQRP Replacement Carbon Odor Filters which naturally deodorizes the air by absorbing and eliminating odors that may come from pets, garbage, bathrooms, smoke, litter boxes or cooking. These activated carbon (charcoal) filters are for use in Holmes and Bionaire branded table top and tower air purifiers. The Carbon filter can be combined with Holmes / Bionaire main HEPA-type Air Purifier Filters for trapping tobacco and cigarette smoke, pet odors, cooking odors and household chemicals. The Carbon Filter is great added level of filtration to deliver better air quality.NOTE Does NOT replace washable foam pre filter! Compatible with Holmes Air Purifiers, Holmes AOR31 carbon filter Replacement. HQRP® 8-pack Carbon

Price is $18.00

Price: $17.91