Among the oldest and most famous of the windows, on the southern side of the choir, is an enthroned Mary with Jesus on her lap, Notre-Dame de la Belle Verriyre.
There is an enthroned Mary with Jesus on her lap on the southern side of the choir.
But in the presence of competition among dealers, there is no difference between setting a standard of service and setting a retail  For a given service standard, competition will lower the price until it's commensurate with the service standard, and for a given price, competition will raise the service standard until it's commensurate with the price.