This study examines the evaluation of principal suppliers by the sales agen
cies that represent them. Results rom a survey of sales agencies show evalu
ations range from extremely informal to formal, with varying criteria, info
rmation sources, and uses of the results of valuations. Overall, formality
of evaluations was quite low, but those agencies using some degree of forma
l procedures in their evaluations indicated better performance of the agenc
y, better relationships between the agency and the principal, and greater o
verall satisfaction with the principal than those firms using extremely inf
ormal evaluations. (C) 2000 Elsevier Science Inc. All rights reserved.