How much does this cost to the nearest dollar?

(Pack of 18) 7 x 8-1/4 Replacement Polyester Filters for The BetterVent Indoor Dryer Vent Made by Airstar, 18 Pack
Indoor Dryer Vent Replacement Filters for BetterVent 7 x 8-1/4 x 1 Blue & White Polyester Filter Pads 7 x 8-1/4 x 1 Blue & White Polyester Filter Pads Pack of 3 Pack of 3 Capturess Dryer Lint without Restricting Air Flow Capturess Dryer Lint without Restricting Air Flow Made in the U.S.A. Made in the U.S.A. Directions for Use Step 1 Open and Remove Old Indoor Dryer Vent Filter Step 1 Open and Remove Old Indoor Dryer Vent Filter Step

Price is $21.00
Price: $20.95