The procurement of product development and production services brings
special strategic considerations to the buyer-seller relationship in i
ndustrial and institutional markets. Multiple sourcing, in particular
dual sourcing, is a likely way of dealing with the increased risks fac
ed by buyers. However, there is lack of dual sourcing models that anal
yze the selection and control process in an integrated fashion. This o
mission has led to apparently contradictory findings in agency and auc
tion theory. The paper models the strategic issues for a cost containm
ent contest between two suppliers. The suppliers are drawn from severa
l vendors who participate in a bidding competition. The supplier with
the lower final cost in the contest wins a larger share of the pooled
profit fee. Propositions are derived for the optimal cost-plus contest
, and comparisons are made with the common incentive contract for the
integrated selection and control model. The larger the winner's share,
the greater the effort. The buyer can make a credible commitment to t
he optimal winner's share. As the winner's share rises, however, the b
id prices increase due to increased contract risk. This incentive-risk
tradeoff determines (a) the optimal winner's share that minimizes exp
ected procurement price, (b) the corresponding profit fee bid by suppl
iers, (c) the ensuing cost control effort, and (d) the final price for
the procurement. Comparisons with the common incentive contract tell
us when the cost-plus contest induces more effort, and when bidding fo
r a contest results in a lower final procurement price.