It is a dear interior mod to be fair, i' guessing it's around 100 for the actual dock and fitting, but thats without the aux and adapter, my car hasn't got the aux fitted either which is a must for me, but i don't want wires coming from the glove box. Let me know how you get on, heres a link on a guide where someones created it themselves and to be honest, it looks better fitted and cleaner.