How much does this cost to the nearest dollar?

SINGCALL Coaster Paging System,Wireless Guest Paging & Queuing System,Notify Customers When The Dish is Ok, 1 Transmitter 30 Pagers(red)
Coaster Paging System, Customers take food to use.Wireless Guest Paging & Queuing System, notify customers when the dish is ok. Wireless guest paging & queuing system includes one transmitter and 30 pagers(red one). When customers arrive, they are given a pager with identifier which will enter into pager queuing automatically. After getting the pager, customers are free to take a seat or roam nearby. Staff inputs the pager number and reference in transmitter, the pager alerts in sound,light and vibration to call the customers back to their meal or queue when it is ready. Transmitter parameter Category Parameter Product model Dimensions inches

Price is $
Price: $839.99