Where to get an iPhone 4 cable to 2.5mm jack?

[princesultan]

I need a cable that connects to my iPhone 4 to a 2.5mm jack in my car. Something cheap I guess. I live in Canada, so preferably something with decent shipping rates to there.

Any help appreciated!

Edit: Just found this for around 5$. Too cheap?

http://www.dealextreme.com/details.dx/sku.37067