Seems like a good deal as I've had ones the same price from eBay / Dealextreme and they all seem to drop to bits. Belkin are a 'known' brand, should be good quality. Taken from The hut's webpage:
Now you can use your iPod, PDA, MP3, CD, cassette player, PC, or laptop to listen to your favorite tunes through any FM stereo receiver. The Belkin TuneCast II Mobile FM Transmitter wirelessly connects portable music players to your car or home stereo quickly and easily using FM radio waves. Just plug the TuneCast II into the headphone jack of your iPod, PDA,MP3, CD, or cassette player; or connect it to your PC or laptop computer. Tune your car stereo or receiver to any clear FM frequency, and enjoy your iPod music experience with more sound and fewer wires.
We add a great convenience feature with our unique Auto ON/OFF function. It frees you from having to manually toggle your TuneCast II''s ON/OFF switch by simply powering on when an audio signal is detected. If no signal is detected for a period of 60 seconds, your TuneCast II switches off. This innovation preserves battery life while making your outstanding mobile audio experience simpler to enjoy.
TuneCast II also features 4 programable memory slots allowing you to save the clearest station wherever you go.
TuneCast II includes a Belkin Mobile Power Cord that connects to your car's cigarette lighter so you can preserve your batteries as you play your tunes on the road (will not charge the TuneCast II).