How much does this cost to the nearest dollar?

Dopesplay Wireless Portable Monitor, Lapdock Touchscreen Built-in Battery Touch 1080P HDR IPS Second External Monitor for Laptop(NO Touch on MAC and iPhone)
Wireless Connection Newly upgraded wireless portable monitor, easily connect your device through wifi and bluetooth. The lapdock portable monitor provides over six different modes to meet different needs. Built-in rechargeable battery and wireless connection make it truly mobile wireless work, freeing you from cable constraints and bringing a more free office experience! Touch Screen Monitor The Dopesplay lapdock monitor for laptop supports captivate multi-touch technology, providing precise and sensitive touch functionality without requiring any additional drivers. The touch screen function is compatible with extend mode while working, duplicate mode during presentations, desktop mode for mobile working, and game mode for a seamless touchscreen gaming experience. Built-in

Price is $400.00
Price: $399.99