How much does this cost to the nearest dollar?

Royal Berkey Gravity-Fed Water Filter with 2 Black Berkey Elements and 2 Berkey PF-2 Fluoride and Arsenic Reduction Elements for Everyday Home Use
Berkey Water Systems is the leader in gravity-fed filtration systems and trusted choice of adventurers, preppers, off-grid homesteaders and families for over 20 years. Berkey Systems were originally designed for extreme use for emergency preparedness and off-grid activities, and are also now used every day in millions of homes around the world by discerning, health conscious consumers who have declared water independence. Berkey systems provide economical, long-lasting water filtration for just pennies a gallon. No electricity, tools, or plumbing required. Berkey gravity-fed water systems are available in 7 sizes and are ideal for use at

Price is $526.00
Price: $525.99