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AliExpress Fake-Discount Detector

Quick answer

Paste an AliExpress product link before the 11.11 sale: we compare the claimed discount with our stored price history and similar-product prices — real

Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.

How does this detector spot fake discounts?

Claimed discount = (Original − Current) ÷ Original | Verdict from two kinds of evidence: our price history + the median of similar products

AliExpress usually shows a struck-through "original" price and a lower sale price — and the "original" is sometimes raised right before a sale to make the discount look bigger. We can't read the seller's mind, but we can weigh the evidence: (1) the price snapshots we've stored for this exact product over past days and weeks — if the current price is genuinely below its historical average the discount is real, and if the "original" is above anything we've ever recorded it's likely inflated; (2) prices of similar products on sale right now — if their median sits near the current sale price, the "original" is questionable. We only issue a verdict when the evidence supports one; when signals conflict or data is thin we say so honestly instead of dressing up a guess.

  1. 1

    Step 1

    Paste the product-page link and pick the ship-to country.

  2. 2

    Step 2

    We fetch the current and claimed "original" prices from the AliExpress API.

  3. 3

    Step 3

    We compare them with our stored snapshots and the median of similar products.

  4. 4

    Step 4

    You get the verdict with the exact numbers behind it: real, inflated, or not enough data.

FAQs

How do you know the "original" price is inflated?

When the claimed "original" is clearly above the highest price we've ever recorded for the same product in our tracking, or clearly above the median of similar products on sale right now — that's strong evidence the struck-through number was pumped up to enlarge the discount.

What does "not enough data" mean?

Either we just started tracking this product (we need at least 5 snapshots spanning a week), or we couldn't find enough similar products to compare with, or the evidence conflicted. We prefer honesty over a verdict nothing supports.

Is this useful before the 11.11 sale?

Yes — this is its peak season: many "original" prices get raised just before the event. Check the products you plan to buy a few days before 11.11 so our snapshots build up, then check again on the day to see whether the price is actually lower than it was.

Do you know the seller's true original price?

No — and nobody outside AliExpress does. All we do is weigh the available evidence: our stored price history and similar-product prices. That's why we always show the numbers behind the verdict, so you can judge for yourself.

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