Bluetooth for 2003 L322

Was hoping to add bluetooth in my new Range Rover.

I know the kits are available to allow syncing straight with the central module. Whilst these are great they are a little pricey at $775.

Does anyone have a cheaper alternative or is a PARROT really the best thing available?

Anyone got any thoughts?

Thanks

Matt

Got a parrot kit on mine - can't fault it! And only cost £100