How much does this cost to the nearest dollar?

Hiboost Cell Phone Signal Booster for Home and Office, 4,000 sq ft, Boost 5G 4G LTE Data for Verizon AT&T and All U.S. Carriers, FCC Approved
📶 𝐂𝐞𝐥𝐥 𝐁𝐨𝐨𝐬𝐭𝐞𝐫 𝐟𝐨𝐫 𝐇𝐨𝐦𝐞 Hiboost cell phone booster enhances the weak signal in your home, office, shop, metal building 100x. the Cell Booster covers up to 4,000 sq. ft for 2-3 rooms. Enjoy better talk, text, and stream, Friendly to multi-room and multi-user

Price is $400.00
Price: $399.99