I just bought a generic one on Amazon.com for $7.21 + $6.54 shipping ($13.75 total).
Link: http://www.amazon.com/gp/product/B0006I ... -4&seller=
It is a Sabrent SBT-SP6C 6-Channel 5.1 Surround Sound 3D PCI Sound Car
I received the package in 3 days from the processed date from City of Industry California to Toledo, Ohio, United States (2,235 miles/3,597km). I placed the order on the night of the 18th and the package was received at 2:27PM on the 21st.
The card works, but the driver installation CD that comes with the hardware did not work for me. I managed to get the sound card to work by downloading the C-Media CMI8738 WDM driver.
Driver download: http://www.cmedia.com.tw/en/DownloadCen ... &dtype=ALL
The very top one (CMI8738LX Windows 7 RC Build 7600, Ver 8.17.40, 2010-02-09) worked fine for me.
I use Yahoo Messenger and the driver software includes a 16-bit full duplex codec so I was able to listen to voice chat without needing a microphone. On my built-in realtek sound card on my motherboard I couldn't listen to voice chat unless a mic was plugged in so the fact that this card is Yahoo Messenger ready is a plus. It also supports Mac OSX and Linux. Not bad for under $14.