I ordered as a replacement for my headset microphone for Ventrilo, at that price I had nothing to lose. I used it once, but no one could hear me unless I was right next to it. I ended up using my headset sat on the desk in front of me instead. As an unpowered microphone it does work, but likely that soundcard post-processing would help boost the signal it does get – though at this price I doubt you have an expensive soundcard.
So yes it works, and I certainly couldn't make this product for that price. But expect to get what you pay for.