Because winning November and December is the end game. Completely end any hype of halo 5 by dropping the price and releasing the two mega bundles for 399, November would be totally in the bag. They have a good chance at October without the price cut anywayThe Halo bundle, the kinect bundle, and the ori-gears-rr bundle all launch on the 27th. That single day will have a HUGE amount of sales and generate a HUGE amount of momentum going into the holidays. Lessening that impact seems more realistic than stopping the momentum once started.