Online stores generally do not have to honor price mistakes online. If a retailer lists a product at the wrong price, catches the error, and cancels your order, that is almost always within its rights. A posted price is not a binding promise to sell, the store’s terms give it explicit permission to cancel pricing errors, and contract law gives it a further defense when the mistake was obvious. You are entitled to a full refund, but not to the item at the mistaken price.
A Posted Price Is Not a Binding Offer
The reason retailers can walk away from a pricing error starts with basic contract law: a price on a website is treated as an invitation to make an offer, not an offer itself. When you click buy and submit your order, you are the one making the offer. The store decides whether to accept.
That flips the intuition most shoppers bring to online shopping. The listing looks like a promise to sell at that price, but legally it works more like a shelf tag: an invitation to bring the item to the counter. The store still has the last word.
When the Contract Actually Forms
The next question is when acceptance happens, because that is the moment the price locks in. Under the Uniform Commercial Code, an order to buy goods for shipment can be accepted either by a promise to ship or by actually shipping the goods.1Cornell Law School / Legal Information Institute (LII). UCC 2-206 – Offer and Acceptance in Formation of Contract For most online retailers, that means the contract becomes binding when the item ships.
The automated confirmation email you get right after checkout is not acceptance. Read the fine print and you will usually find a line saying the message confirms your order, not the store’s agreement to sell. Until the warehouse actually sends the item out the door, the store can still reject your offer and cancel. That is the window retailers use to catch and correct pricing mistakes.
What Store Terms Add on Top
Every major online retailer builds extra protection into the terms you agree to at checkout. Three clauses tend to show up.
A right-to-cancel clause lets the store void any order containing a pricing mistake, even after your payment has been processed, with a refund issued promptly. Retailers like Amazon, Best Buy, and Walmart all include some version of this.
An explicit disclaimer that listings and prices are invitations for offers, not commitments. Best Buy’s terms, for example, state that prices are subject to change and that a product’s price cannot be confirmed until an order is placed; if the item is mispriced, Best Buy reserves the right to cancel.
An error-correction clause giving the store broad authority to fix pricing discrepancies. Walmart’s terms note that the company is not obligated to honor erroneous prices, including prices generated by automated or AI-driven features that may not be accurate.
You agree to all of this when you complete checkout, whether you read it or not, and courts routinely enforce clickwrap agreements. So even if a contract had technically formed, the terms you clicked through would still let the store back out of a pricing error.
The Obvious-Error Rule
Contract law gives retailers one more defense: the doctrine of unilateral mistake. When one party makes a significant error about a material term and the other party knew or should have known about the mistake, the contract can be voided.
This is where the “too good to be true” instinct actually matters legally. If a $1,200 laptop is listed for $12, a reasonable buyer would recognize something is wrong, and a court will let the retailer rescind the sale. Courts look at whether the non-mistaken party was aware of the error or whether a reasonable person in their position would have been.
The reverse is also true. If the price is off by a smaller amount, say $299 instead of $349, the mistake is not obvious to a buyer, and a court would be less sympathetic to the retailer. In practice, though, stores rarely bother canceling orders over small discrepancies because the reputational cost outweighs the loss.
What If the Item Already Shipped
Once the product leaves the warehouse, the analysis shifts, because at that point a contract likely exists. The UCC provides that a buyer must pay at the contract rate for any goods accepted.2Cornell Law School / Legal Information Institute (LII). UCC 2-607 – Effect of Acceptance; Notice of Breach; Burden of Establishing Breach After Acceptance In theory the store could seek the difference between the mistaken and correct price, or ask you to return the item.
In practice, this almost never happens with major retailers. The cost of pursuing the claim usually exceeds the loss, and demanding customers return delivered goods creates severe reputational damage. Most retailers absorb the loss on shipped items and tighten their systems to prevent repeat errors.
One rule that does not help here is the federal unordered merchandise law. It lets you keep merchandise mailed to you without your prior request as a free gift, but it applies only to truly unsolicited goods, defined as “merchandise mailed without the prior expressed request or consent of the recipient.”3Office of the Law Revision Counsel. 39 USC 3009 – Mailing of Unordered Merchandise When you placed an order, you made a request. The item is not unordered, even if the price was wrong. The FTC’s guidance on unordered merchandise does not cover this scenario.4Federal Trade Commission. What To Do if You’re Billed for Things You Never Got, or You Get Unordered Products
When a Mistake Crosses Into Bait-and-Switch
There is one scenario where a pricing “error” can create real legal liability for a store: bait-and-switch advertising. Federal regulations define bait advertising as “an alluring but insincere offer to sell a product or service which the advertiser in truth does not intend or want to sell,” with the purpose of steering consumers toward something more expensive.5eCFR. 16 CFR Part 238 – Guides Against Bait Advertising The FTC enforces this under its authority to prohibit unfair or deceptive acts in commerce.6Office of the Law Revision Counsel. 15 USC 45 – Unfair Methods of Competition Unlawful
The distinction between a genuine error and bait-and-switch comes down to intent. A retailer who accidentally miscodes a price and promptly cancels affected orders is making a mistake. A retailer who advertises impossibly low prices to drive traffic and then steers every customer toward a more expensive alternative is running a scheme. The FTC’s guides make clear that even if the true facts are later disclosed, the law is violated if the initial contact was secured through deception.5eCFR. 16 CFR Part 238 – Guides Against Bait Advertising
Patterns matter. If the same store repeatedly posts dramatically low prices, cancels the orders, and then pushes customers toward full-price alternatives, that starts looking less like bad luck and more like a deliberate scheme.
What You Are Owed After a Cancellation
If the store cancels your order due to a pricing error, you are entitled to a full refund. The FTC’s Mail, Internet, or Telephone Order Merchandise Rule sets specific timelines.
- For cash, check, or money order payments, the store must send the refund within seven working days of when your right to a refund takes effect.7eCFR. 16 CFR Part 435 – Mail, Internet, or Telephone Order Merchandise
- For credit card payments where the store is the creditor, the refund must be issued within one billing cycle.7eCFR. 16 CFR Part 435 – Mail, Internet, or Telephone Order Merchandise
Some retailers offer a goodwill gesture alongside the cancellation, like a discount code or a small reduction on the correctly priced item. Those are voluntary and vary widely.
Using Your Credit Card as a Backup
If a store charges your card and then fails to deliver, the Fair Credit Billing Act lets you dispute the charge with your card issuer for goods “not delivered to the obligor or his designee in accordance with the agreement made at the time of a transaction.”8Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
Send written notice to your card issuer within 60 days of the statement containing the charge. The notice needs to identify your account, state the amount you believe is wrong, and explain why. Once the issuer receives your dispute, it has to acknowledge it within 30 days and resolve it within two billing cycles, no more than 90 days.8Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
Most reputable retailers will refund you without requiring a chargeback. But if a store drags its feet or goes silent after canceling your order, this is the fallback. File promptly so you do not run past the 60-day window.
Reporting a Pattern
A single pricing error that a store promptly corrects is not worth reporting. A pattern of misleading prices, repeated bait-and-switch tactics, or a refusal to refund a canceled order may warrant a complaint.
At the federal level, the FTC collects consumer reports through ReportFraud.ftc.gov. The FTC does not resolve individual complaints, but it enters reports into a database shared with over 2,000 law enforcement partners, and patterns can trigger investigations.9Federal Trade Commission. ReportFraud.ftc.gov
At the state level, your attorney general’s office is the primary enforcer of consumer protection laws. State statutes broadly prohibit unfair, misleading, and deceptive practices, and attorneys general have authority to investigate, settle with, and litigate against violators.
Before filing anything, save your evidence: screenshots of the advertised price, the order confirmation email, the cancellation notice, and any communication with customer service. Those details are what make a complaint actionable rather than anecdotal.