I would recommend calling Balenciaga directly since you will receive free shipping and no tax charged on your purchase since there is no Balenciaga store in AZ. On a $1300 bag, tax can add up quite quickly.
I suggest you go look at the bags at NM and decide which color and style you want and give Balenciaga a call with your exact requirements on the bag.
If you are going to get it full priced, why not save a few bucks?