Yakima, from what I have seen, does not discount their racks to anyone... the prices that were charged at my local bike store, local climbing store and REI.com were all the EXACT same. REI does allow you to become a member and get money back at the end of the year though...
All in all I spent:
$40 for two sets of Q-clips
$100 for a set (4) QTR towers
$40 for cross bars
$100 for a lockable full length tray
I had the trays and the fron wind fairing from an older car... but the prices are about the same everywhere...
I had a difficult time getting the rack to fit my car and without CAREFUL planning, the sunroof cannot be opened with it on.