The concept of a clothing rental agency originated from Perfikot's observation of the mountain of "old clothes," never worn, in Eldest Princess Annie's wardrobe.
Initially, Perfikot's idea was to organize a charity sale, auctioning off these "old clothes" that the Eldest Princess no longer wore, and using the funds raised to improve the lives of the impoverished in Langton.
This method is not significantly different from how charitable foundations operate in the original world: auctioning off items and using the proceeds for charity.
However, in the original world, these charity auctions were often akin to money laundering, serving as a social embellishment for the wealthy, and the so-called charitable funds largely functioned as tax shelters.
As for how much charity they truly performed?