Apple doesn't really do discounts on laptops, and on BF they might give out Beats but who cares to be honest (unless you really want a pair, but you're probably better off buying the laptop on discount and using that $ to buy them)
Either go to BB and get the $100 discount or go to Expercom and see if they have the model you want on discount, which they probably will by hundreds of $ (MacRumors article showing them)
Another thing you can do is keep checking 9to5toys.com which always posts fresh discounts on stuff