How much does this cost to the nearest dollar?

Rockville DMX-WTR Wireless DJ DMX Lighting Receivers
Package Includes (1) RockvilIe DMX-WTR 2.4GHZ Wireless DJ DMX Lighting Transmitter. DMX-WRE 2.4GHZ Wireless DJ DMX Receiver w/ 9 Hour Rechargeable Battery. Features of DMX-WTR RockvilIe DMX-WTR 2.4GHz Wireless DJ DMX Transmitter. Daisy-chain multiple lights together and use one receiver to control all of the connected lights. This setup requires one transmitter and one receiver Connect one transmitter to your DMX controller and then one receiver to each light, and each light will have its own channels on the controller so they can all be controlled independently (this can be done with up to 

Price is $90.00
Price: $89.95