A Shark cordless vacuum. Listed at $149. Advertised as 50% off its $299.99 list price. Except the $299.99 price had only appeared on Amazon since May 21 of that year. The vacuum's average price since 2019 was around $200, it had sold for $149 during five separate months prior to Prime Day, and the exact same price was available simultaneously at Best Buy, Macy's, Lowe's, and Ace Hardware. This is not an edge case. According to a July 2025 investigation by Popular Information, the same pattern held for a Ninja Air Fryer Pro XL advertised at "33% off" from a list price that had only existed for seven weeks — a product that had sold for as low as $89.99 the prior November.
Prime Day generates staggering numbers. Adobe Analytics projected $23.8 billion in online spending during the 2025 event — a 28.4% increase year over year. That figure is real. What is less real are many of the discounts shoppers believe they are getting to spend it.
The Inflated 'Was' Price Problem
Amazon's own policy states that a stricken-through list price is shown if the product was purchased on Amazon at or above that price within at least the last 90 days. That threshold is doing a lot of work. A seller can list a product at an inflated price for a single day, establish a paper trail, then slash it back to the normal selling price during Prime Day and legally display a dramatic percentage-off badge.
A September 2025 federal class-action lawsuit filed in the Western District of Washington charges Amazon with exactly this practice. The complaint cites a children's tablet that retailed at $72.18 during Prime Day 2025 — nearly 50% higher than its April 2025 price and broadly in line with what had been its typical selling price throughout the year. Plaintiffs from California and Maryland allege they were influenced into purchases based on pricing representations that were not supported by actual market history (ClassAction.org, 2025).
This is not a fringe allegation. By early 2026, Amazon had introduced stricter rules on how reference prices and discounts are displayed across its marketplace, targeting practices where sellers used inflated list prices to make current offers appear more attractive than they were, according to The Information. The policy change itself is an acknowledgment that the problem existed at scale.
Pre-Sale Price Hikes: The Setup
The inflated list price strategy requires a setup period. Sellers or Amazon itself raises prices in the weeks before Prime Day, creating the baseline from which the "discount" will be calculated. The data bears this out at a macro level. A 2025 analysis by DataWeave covering 11,495 products across Consumer Electronics, Apparel, Home & Furniture, and Health & Beauty found that year-over-year prices rose across every major category — Apparel up 9.5%, Health & Beauty up 7.9%, Consumer Electronics up 5.1%, Home & Furniture up 3.9%. In total, 47% of tracked products carried higher prices compared to Prime Day 2024 (DataWeave, 2025).
Record sales were achieved in an environment of elevated base pricing. More spending does not mean better deals. Those two things can move in opposite directions, and during Prime Day they frequently do.
Adobe Analytics quantified the actual discount range during Prime Day 2025 as 10% to 24% off listed prices across U.S. retailers — substantially narrower than the "up to 70% off" figures Amazon promotes in its marketing (Adobe Analytics, July 2025). "Up to 70% off" is technically accurate in the same way that a lottery advertised as "up to $100 million" is technically accurate. The number is real. The probability of encountering it is not what the framing implies.
Lightning Deals and Fake Urgency
Lightning Deals are engineered around scarcity and countdown timers. The format creates a specific psychological pressure: decide now or lose the deal. That pressure is effective. A 2024 study of Prime Day shopping behavior found that 54% of Prime Day shoppers said they bought items they had been waiting to go on sale — and 54% also compared prices at other online retailers during the event (Capital One Shopping Research, 2024). Price-aware consumers still get pulled in by urgency framing.
The timer and the claimed claim count create a sense that something valuable is disappearing. Two questions worth asking before acting on that pressure:
- Has this product run Lightning Deals before? Most do, repeatedly.
- Is the Lightning Deal price actually lower than the 30- or 90-day historical average? The timer says nothing about whether the price is good.
The urgency is structural, not informational. It tells you something is ending. It does not tell you whether it was worth starting.
The Review Layer: Fake Deals Often Come With Fake Praise
Deceptive pricing and review manipulation tend to cluster in the same listings. Sellers who are willing to misrepresent a discount's size are often willing to misrepresent product quality too. Across 50 recent BuyWise analyses of Amazon listings flagged as having deceptive deal assessments, 24 showed high suspicious review signals — that is nearly half. The majority of those listings received grades of B or lower, with 12 rated D, meaning the review signal was weak enough that the star rating should not be trusted at face value.
One pattern BuyWise recently analyzed: a health supplement listed at an apparent Prime Day discount, with 39% of its reviews flagged as suspicious and a deal assessment marked deceptive. The listing carried keyword stuffing in the product title — a common signal that the seller is gaming both search placement and perceived legitimacy. The star rating looked fine. The underlying review data did not.
This matters because Amazon's star rating is often the only quality signal a shopper checks in addition to price. If both are manipulated, the standard verification method fails entirely.
How to Verify Whether a Prime Day Discount Is Real
There is a short checklist that covers most cases. None of these steps take more than two minutes.
- Check the 90-day price history. Paste the product URL into CamelCamelCamel or Keepa. If the current Prime Day price matches or exceeds the 90-day average, the discount is fictional. If the list price spiked sharply in May or June, that spike is the setup.
- Search the product name at competing retailers. Open a new tab and check the same item at Walmart, Target, Best Buy, or the manufacturer's own site. The Shark vacuum example above was available at the same price at four other retailers simultaneously. Amazon had no exclusive claim to the deal.
- Ignore the list price. Focus on the sale price. The stricken-through number is not independently verified. Treat it as marketing copy. The only number that matters is what you pay today versus what the product has historically sold for.
- Audit the reviews before the discount. Sort by "Most Recent" and look for clusters of positive reviews with identical phrasing or generic language. Check the verified purchase ratio. A product with a manufactured discount often has manufactured social proof alongside it. BuyWise automates this check if you want a faster signal.
- Give yourself 48 hours on non-Lightning items. Prime Day runs for multiple days. Items not in Lightning Deal format will almost always be available at the same price tomorrow. The urgency framing applies to Lightning Deals. For standard deal badges, it's purely atmospheric.
The Regulatory Context Is Shifting
Amazon is not operating in a consequence-free environment on any of this. In September 2025, the FTC secured a $2.5 billion settlement against Amazon related to deceptive Prime enrollment and cancellation practices — including a $1 billion civil penalty and $1.5 billion in consumer refunds (FTC, 2025). That case centered on subscription dark patterns rather than fake discounts specifically, but it sits within a broader pattern of regulatory scrutiny over Amazon's consumer manipulation tactics.
Amazon's early 2026 rule changes on reference price display suggest the company is trying to get ahead of further legal exposure. Whether those rule changes are substantively enforced against third-party sellers on the marketplace remains to be seen. The class-action lawsuit filed in Washington state in September 2025 over Prime Day 2025 pricing will be a test of whether the courts treat fictional list prices as actionable consumer fraud.
For now, the regulatory environment is shifting in the right direction. But it is shifting slowly. The practical implication: do not wait for platform policy to protect you. Verify prices yourself.
What to Actually Expect From Prime Day
Real deals exist on Prime Day. Some items — particularly older tech, last-generation electronics, and Amazon's own hardware — do see genuine price reductions. The event is not entirely theater. But the "up to 70% off" framing is. Adobe's data puts the realistic discount range at 10% to 24%, and nearly half of tracked products in 2025 were priced higher than the prior year's equivalent event.
The shoppers who do well on Prime Day treat it as a tool rather than an event. They arrive with a short list of specific products they've already tracked. They know the historical price before the sale starts. They ignore the list price entirely. And they check competing retailers before clicking buy.
The countdown timer is not your enemy. Arriving unprepared is.
