Product link.
Retails for $19.99, standalone.
The BoosterPack with the MSP430FR4133 Launchpad retails for $27.99
The BOOST-IR BoosterPack™ Plug-in Module can be plugged into a LaunchPad™ Development Kit for simple integration of Infrared (IR) transceiver functionality. LaunchPad developers can use this BoosterPack to start developing remote control applications using the on-board keypad, IR LED transmitter, and IR receiver + demodulator.