What does this cost to the nearest dollar?

Title: Filterbuy 18x20x2 MERV 11 Allergen Air Filters (2-Pack)  
Category: Home & Garden  
Brand: Filterbuy  
Description: Pleated HVAC air filters with MERV 11 rating for high-efficiency allergen and pet dander removal.  
Details: Each filter measures 17.5" × 19.5" × 1.75" and features an electrostatically charged polyester pleated media with an industrial‑grade beverage board frame for durability and low airflow resistance

Price is $