It really all depends on the brand, and the material the bag is made out of. I would never spend more then about $500-600 on a canvas bag. However, if it was a great leather bag, I probably wouldn't go over $4,000. That being said, a bag that's $4,000 would have to be pretty damn fabulous, something that I've wanted for a while, and go with every outfit in my wardrobe. Although I would spend much more on a Birkin or a Kelly, but that would take a long time to save for.