How much does this cost to the nearest dollar?

Premium Keurig compatible-Alkaline Ceramic-Charcoal Water Filters Replacement Cartridges-First filter for Keurig with alkaline ceramics for Keurig Coffee Machines after Pending (6 Pack)
You Bought a Great Coffee Maker, Now Buy a Great Water Filter! The First Keurig compatible Alkaline Charcoal Filter! Our proprietary patent pending alkaline ceramic charcoal cartridge combines FINE CHARCOAL ABSORPTION with the Alkaline pH POWER to eliminate heavy metals like arsenic, mercury, copper & lead. Acidic aftertaste eliminated by our Magnesium ceramic blend filter! ULTRA FINE CHARCOAL ABSORPTION Activated charcoal blended water filter absorbs a great amount of elements and trap contaminants. Our Active Charcoal will purify the water by eliminating chlorine, sediment

Price is $13.00
Price: $12.97