How much does this cost to the nearest dollar?

Pure Enrichment Humidifier Decalcification Cartridge Filter for MistAire Cloud (PECLDHUM) and Hume Max Top Fill Humidifier (PEHUMTOP)
Extend the life of your humidifier with the Humidifier Decalcification Cartridge Filter by Pure Enrichment ®. This easy-to-install filter screws into your humidifier water tank, replacing the water tank cap, to help reduce mineral buildup and the formation of white dust in your water tank. For optimal performance, we recommend replacing your humidifier’s filter every 2-3 months. Our filter is designed to work with Pure Enrichment’s MistAire™ Cloud Humidifier (PECLDHUM) and HUME™ Max Top Fill Humidifier (PEHUMTOP and

Price is $10.00
Price: $9.99