How much does this cost to the nearest dollar?

2-Pack Replacement for Refrigerator Water Filter - Compatible with Maytag Fridge Water Filter Cartridge
This is a Denali Pure Brand replacement part, NOT an OEM product. All mentions of brand names or model descriptions are made strictly to illustrate compatibility. All brand names and logos are registered trademarks of their respective owners. This product is not affiliated with any OEM brands and is not covered under any warranties offered by the original manufacturers. Any warranties for this product are offered solely by Denali Pure. Replacement for Filter Manufacturer Upstart Battery, model number Rank Tools & Home Improvement In-Refrigerator Water Filters 3645, Is Discontinued No, Available May 27, 2015, Duration 6 \tmonths, External Testing Certification ANSI, NSF, Brand Upstart Battery

Price is $22.00
Price: $21.99