They were pretty hard for me too, about pricing etc... different prices in different stores. Still, i got it in the end.
Not into BMX i'm afraid, into "proper" bikes

. Which leads onto my next question, my bike is undoubtedly bigger than BMX, it fits IN the car easily... why dont you just bung it in the back?? I only got bars cos i take two, and canoes etc... And, you will (idealy) need a cycle carrier too, as its harder than you think to attach it, and it goes without saying, good quality straps, as you like your car, and dont want it to crash down on your roof

! Hope you find a suitable arrangement.
p.s. If you want me too i will find out the code for you?