Do Buyer-Size Discounts Depend on the Curvature of the Surplus Function? Experimental Tests of Bargaining Models
Bradley Ruffle and Christopher Snyder Hans Normann ()
Additional contact information Bradley Ruffle and Christopher Snyder Hans Normann: Department of Economics, Royal Holloway, University of London, http://www.rhul.ac.uk/Economics/about-us/normann.html Authors registered in the RePEc Author Service: Hans-Theo Normann () and
Bradley Ruffle ()
Abstract:
A number of recent theoretical papers have shown that for buyer-size discounts to emerge in a bargaining model, the total surplus function over which parties bargain must have certain nonlinearities. We test the theory in an experimental setting in which a seller bargains with a number of buyers of different sizes. We generate nonlinearities in the surplus function by varying the shape of the seller’s cost function. Our results strongly support the theory. As predicted, large-buyer discounts emerge only in the case of increasing marginal cost, corresponding to a concave surplus function.