In Lefkowitz v. Great Minneapolis Surplus Store, the Minnesota Supreme Court held in 1957 that a newspaper advertisement can be a legally binding offer, not just an invitation to bargain, when its terms are “clear, definite, and explicit, and leave nothing open for negotiation.” Once a customer performs what the ad asks, the advertiser has to honor the deal and cannot tack on unpublished conditions after the fact.1Justia. Lefkowitz v. Great Minneapolis Surplus Store, Inc. Reported at 86 N.W.2d 689, the decision remains the leading American authority on when a promotional message crosses from marketing into contract.
Facts of the Case
In April 1956, the Great Minneapolis Surplus Store ran a newspaper ad offering three brand new fur coats, described as “Worth to $100.00,” for one dollar each on a first-come, first-served basis. A week later, the store published a second ad listing two pastel mink scarfs (selling for $89.50) and one black lapin stole (valued at $139.50), each priced at one dollar and again available to whoever showed up first.1Justia. Lefkowitz v. Great Minneapolis Surplus Store, Inc.
Morris Lefkowitz was the first person through the door both Saturdays, dollar in hand. Both times, the store refused to sell. Management told him the offers were meant for women only under an unwritten “house rule” that appeared nowhere in the ads. On his second visit, they simply told him he already knew the policy. Lefkowitz sued to recover the value of the merchandise he was denied.
The Rule the Court Announced
Most advertisements are treated as invitations to negotiate rather than as offers a customer can accept on the spot. A store that prints “Televisions starting at $299” hasn’t promised to sell you one at that price; it’s inviting you in to make a deal. That default rule exists because most ads lack the specificity contract formation requires: they don’t say exactly how many items are available, who can buy them, or what the buyer needs to do.
The Lefkowitz court recognized an exception. Drawing on the Williston treatise on contracts, the court asked “whether the facts show that some performance was promised in positive terms in return for something requested.”1Justia. Lefkowitz v. Great Minneapolis Surplus Store, Inc. When an ad names a specific item, states a specific price, specifies quantity, and tells the reader exactly what to do to claim it, it stops being an invitation and becomes an offer. The second ad hit every mark: one black lapin stole, one dollar, first come first served. Nothing was left to negotiate.
This kind of arrangement is what contract law calls a unilateral contract. The advertiser makes a promise (“we’ll sell this stole for a dollar”), and the customer accepts by performing the requested act (showing up first with the money). Once the customer performs, the contract is complete.
What the Court Awarded, and What It Denied
The trial court found the store liable for breaching the contract formed by the second ad. Because the stole’s value was stated in the ad at $139.50, the court awarded Lefkowitz $138.50, the market value minus the one-dollar purchase price he would have paid.1Justia. Lefkowitz v. Great Minneapolis Surplus Store, Inc.
Lefkowitz lost on the fur coats. The first ad described them only as “Worth to $100.00,” and the court found that language too vague to fix a dollar figure for damages. A coat “worth up to $100” could be worth $20 or $95, and the court had no way to determine which. The Minnesota Supreme Court affirmed on both points.1Justia. Lefkowitz v. Great Minneapolis Surplus Store, Inc.
The fur coat ruling is easy to overlook, but it carries a practical lesson: even when an ad qualifies as a binding offer, recovery depends on the item’s value being ascertainable. Vague phrases like “worth up to” undercut a claim because the court cannot calculate what was lost.
Why the Store Could Not Add the “House Rule” Later
The store’s main defense was its unwritten policy limiting the sale to women. The court disposed of this quickly. An advertiser can modify or withdraw an offer at any time before someone accepts it, but that power disappears the moment a customer performs the required act. Lefkowitz had already shown up first and tendered his dollar. At that point, the contract existed, and the store could not bolt on new conditions it had never published.1Justia. Lefkowitz v. Great Minneapolis Surplus Store, Inc.
The principle is straightforward. Whoever makes an offer controls its terms from the outset. The store could have written “women only” in the ad, and that restriction would have been part of the offer. It could have pulled the ad before Saturday morning. What it could not do was wait until a customer met every stated condition and then spring a hidden restriction. Contract formation draws a hard line there.
How Later Courts Have Applied Lefkowitz
Lefkowitz set the framework, and courts have used it ever since to sort ads that bind from ads that don’t. Two later cases show how the test works in practice.
Leonard v. Pepsico (1999)
John Leonard tried to hold Pepsi to a television commercial that showed a Harrier fighter jet available for 7,000,000 “Pepsi Points.” He collected enough points (supplementing with cash) and submitted an order form. The federal court ruled the commercial was not a binding offer. Unlike the Lefkowitz ad, the commercial did not include language like “first come, first served,” did not specify quantity, and reserved all details to a separate catalog. No reasonable person could conclude Pepsi was genuinely offering a $23 million military jet for the equivalent of about $700,000.2Justia. Leonard v. Pepsico, Inc., 88 F Supp 2d 116 (SDNY 1999)
The Leonard court cited Lefkowitz’s “clear, definite, and explicit” test and found the commercial failed it on every count. The Restatement (Second) of Contracts reaches a similar conclusion, noting that advertisements are not ordinarily offers but can become one when they contain “some language of commitment or some invitation to take action without further communication.”2Justia. Leonard v. Pepsico, Inc., 88 F Supp 2d 116 (SDNY 1999)
Izadi v. Machado (Gus) Ford (1989)
A Florida appellate court held that a car dealership’s advertisement offering a $3,000 trade-in allowance on any vehicle could be a binding offer when read objectively. The court cited Lefkowitz and emphasized Williston’s principle that the test is not what the advertiser secretly intended, but what a reasonable person reading the ad would understand it to mean. The dealership argued the fine print modified the offer, but the court found the prominent headline created an unqualified promise a consumer could reasonably accept.
Read together, the two cases mark the boundary. Specificity, a stated method of acceptance, and language a reasonable person would take seriously separate a binding offer from a marketing pitch.
Why Lefkowitz Still Matters
The question the Minnesota Supreme Court answered for a 1956 newspaper ad comes up constantly in e-commerce. If a website accidentally lists a $1,200 laptop for $12, does the store have to honor it? The Lefkowitz framework applies in principle: when a website names a specific product, states a specific price, and invites immediate purchase, a court can find a binding offer was made. The more the listing resembles a deliberate promotion, the harder it is for the merchant to claim mistake. When the discrepancy is so extreme that no reasonable person would believe the offer was genuine, the reasoning in Leonard cuts the other way.
For consumers who believe a store’s advertisement meets the Lefkowitz standard and the merchant won’t honor it, contract law is not the only avenue. Every state has a consumer protection statute prohibiting unfair and deceptive trade practices, and those laws typically let individual consumers sue a business that engages in deceptive advertising, sometimes with remedies that include treble damages and attorney’s fees. Lefkowitz himself recovered $138.50 through the courts, and that modest claim went all the way to the Minnesota Supreme Court, where it produced one of the most cited opinions in American contract law.