Well, I havent spent 1300 on a bag yet so not sure about that. Lekin my 400 bag is made of thick leather and lasts me forever and ever without looking like its been beaten to death (which is the case).
Ive just noticed a difference in quality, durability and life. Over the course of a year, I might replace my Target back at least 10 times because it starts to tear, look bad and lose its shape due to all the stuff I carry around in it. On average, these bags cost me about $30 - $40 each.
I would rather spend it on one item that falls apart (by falling apart I mean some of the stitching is fraying around the handle) over a year later.