The graphic shows the intersection point where two users are equally willing to locate at the same rent. The

axis is the distance from the center, and the

axis is the rent paid at that point on the earth. Higher bidders with higher transportation costs will locate to the left of this point. The lower bidder will locate to the right of this point.
R. J. Brown,
Private Real Estate Investment: Data Analysis and Decision Making, Burlington, MA: Elsevier Academic Press, 2005.