The bazaar itself in Joyce's "Araby," doesn't fulfill its magical name. The image of the bazaar that Mangan's sister and the narrator have is an illusion. That's the point of the bazaar in the story.
By the time the boy arrives, it's half-closed, the conversation by the workers that he overhears is silly and coarse and trivial, and the objects for sale are not worth buying.
The boy realizes the bazaar is just a low-rent place to buy worthless trinkets sponsored by the church for the purpose of making money for the church. It is the destruction of this illusion, that leads the boy to his realization, or epiphany, that destroys his other illusions: that Mangan's sister is somehow akin to the Virgin Mary, that he is a holy warrior, and that they have some kind of special relationship.
He realizes how foolish and silly he's been. The blindness, figuratively, is lifted from his eyes.