well my parrot kit is about 4 years old now, but you can pick up a second hand one on fleabay for around £40.
iv also fitted a 3.5mm jack into my stereo so that my iphone plays music through the stereo and 11 speakers sound the bollocks - i dont really need the parrot kit now as it plays the phone hands free through the 3.5mm jack.
otherwise the parrot kit is very good, good sound quality etc..
I have this one
Parrot CK3100 LCD Bluetooth Handsfree Car Kit | eBay
pairs with my iphone great !