How much does this cost to the nearest dollar?

Spektrum SRXL2 DSMX Remote Receiver,
The Spektrum DSMX SRXL2 Remote Receiver is used to provide additional path diversity using Spektrum’s patented MultiLink technology to avoid reflected signal fading and polarization blind spots at long range from the transmitter. The Spektrum SRXL2 is compatible with all receivers that utilize SRXL2 remote receivers (4-pin connector). It features an integrated antenna design inside the case to provide easy installation and worry free performance. SRXL2 Technology Integrated antenna design for easy installation DSMX and DSM2 compatible 22ms and 11ms Compatible Lightweight Dimensions 8 x 4 x 0.5 inches, Weight 0.8 ounces, model number Manufacturer recommended age 14 years and up, Rank Toys & Games

Price is $40.00
Price: $39.99