Passage: Since the 19th century, Louis Vuitton trunks have been made by hand. Contemporary Fashion gives a preview of the creation of the LV trunks: "The craftsmen line up the leather and canvas, tapping in the tiny nails one by one and securing the five-letter solid pick-proof brass locks with an individual handmade key, designed to allow the traveler to have only one key for all of his or her luggage. The wooden frames of each trunk are made of 30-year-old poplar that has been allowed to dry for at least four years. Each trunk has a serial number and can take up to 60 hours to make, and a suitcase as many as 15 hours."Iconic bags of Louis Vuitton include the Speedy bag and Neverfull bags. Each season Louis Vuitton produces rare, limited edition bags that are generally only available by reservation through larger Louis Vuitton stores.Many of the company's products utilize the brown Damier and Monogram Canvas materials, both of which were first used in the late 19th century. All of the company's products exhibit the eponymous LV initials. The company markets its product through its own stores located throughout the world, which allows it to control product quality and pricing. It also allows LV to prevent counterfeit products entering its distribution channels. In addition, the company distributes its products through the company's own website, LouisVuitton.com.

Question: Why does the company sell their items at their own stores?
to control product quality and pricing