Les Bouquinistes - along the Seine you find these sellers of used books, LPs, postcards, etc. Each bouquiniste is given four boxes, all of a specified size, and rent is paid only for the stone on which the boxes rest (less than €100 per year). The most coveted spots are awarded based on seniority. Maintenance costs, including the required vert wagon paint (the green color of old train cars), are paid by the bouquinistes. With little overhead, prices are usually cheaper than in most shops. While these days, tourists prefer magnets and posters over vintage books, the city "officially" allows no more than one box of souvenirs for every three boxes of books. Bouquinistes must be open at least four days a week. The waiting list to become one of Paris' 250 bouquinistes is eight years.