you could get one for less than 300 bucks from www.flyn.com.au
and if ure brave enough, fit it ureself but if not a workshop would do it, that i cant tell you how much as it would vary from shop to shop
i dun really agree with spouses or partners being to controlling
coz i have friends who are controlled by boyfriend or girlfriends and i really feel for them
in a way, ure never ureself anymore