restraints as necessarily illegal, eliminates the need to study the reasonableness of an individual restraint
in light of the real market forces at work, and, it must be acknowledged, the per se rule can give clear
guidance for certain conduct. Restraints that are per se unlawful include horizontal agreements among
competitors to fix prices, or to divide markets.
. . . [T]he per se rule is appropriate only after courts have had considerable experience with the type of
restraint at issue, and only if courts can predict with confidence that it would be invalidated in all or almost
all instances under the rule of reason.
Dr. Miles treated vertical agreements a manufacturer makes with its distributors as analogous to a horizontal
combination among competing distributors. . . . [I]t is necessary to examine, in the first instance, the
economic effects of vertical agreements to fix minimum resale prices, and to determine whether the per se
rule is nonetheless appropriate.
Though each side of the debate can find sources to support its position, it suffices to say here that
economics literature is replete with procompetitive justifications for a manufacturer’s use of resale price
maintenance.
The justifications for vertical price restraints are similar to those for other vertical restraints. Minimum
resale price maintenance can stimulate interbrand competition—the competition among manufacturers
selling different brands of the same type of product—by reducing intrabrand competition—the competition
among retailers selling the same brand. The promotion of interbrand competition is important because “the
primary purpose of the antitrust laws is to protect [this type of] competition.” A single manufacturer’s use of
vertical price restraints tends to eliminate intrabrand price competition; this in turn encourages retailers to
invest in tangible or intangible services or promotional efforts that aid the manufacturer’s position as against
rival manufacturers. Resale price maintenance also has the potential to give consumers more options so that
they can choose among low-price, low-service brands; high-price, high-service brands; and brands that fall in
between.
Absent vertical price restraints, the retail services that enhance interbrand competition might be underprovided.
This is because discounting retailers can free ride on retailers who furnish services and then capture some of
the increased demand those services generate. Consumers might learn, for example, about the benefits of a
manufacturer’s product from a retailer that invests in fine showrooms, offers product demonstrations, or hires
and trains knowledgeable employees. Or consumers might decide to buy the product because they see it in a
retail establishment that has a reputation for selling high-quality merchandise. If the consumer can then buy
the product from a retailer that discounts because it has not spent capital providing services or developing a
quality reputation, the high-service retailer will lose sales to the discounter, forcing it to cut back its services to a
level lower than consumers would otherwise prefer. Minimum resale price maintenance alleviates the problem
because it prevents the discounter from undercutting the service provider. With price competition decreased,
the manufacturer’s retailers compete among themselves over services.
Resale price maintenance, in addition, can increase interbrand competition by facilitating market entry for
new firms and brands. “[N]ew manufacturers and manufacturers entering new markets can use the
restrictions in order to induce competent and aggressive retailers to make the kind of investment of capital
and labor that is often required in the distribution of products unknown to the consumer.”
Resale price maintenance can also increase interbrand competition by encouraging retailer services that
would not be provided even absent free riding. It may be difficult and inefficient for a manufacturer to make
and enforce a contract with a retailer specifying the different services the retailer must perform. Offering the
retailer a guaranteed margin and threatening termination if it does not live up to expectations may be the
most efficient way to expand the manufacturer’s market share by inducing the retailer’s performance and
allowing it to use its own initiative and experience in providing valuable services While vertical agreements
setting minimum resale prices can have procompetitive justifications, they may have anticompetitive effects
in other circumstances. Vertical price restraints also “might be used to organize cartels at the retailer level.”
A group of retailers might collude to fix prices to consumers and then compel a manufacturer to aid the
unlawful arrangement with resale price maintenance. In that instance, the manufacturer does not establish