The raised anchor
List price lifted weeks before a '50% off' event, so the sale price matches the everyday one. A 12-24 month history chart exposes the step-up in seconds.
Find the real lowest price
The lowest price is rarely the number on the banner. It is the price that survives three checks: the item's own history, the order in which code, cashback and shipping are stacked, and the deadlines that protect the money after payment.
01
Before trusting any percentage off, compare the price with 12-24 months of the item's own tracked history. A discount measured against a raised list price is not a discount.
02
One code per order, cashback that a sitewide code can void, and a shipping threshold set above the typical cart: the levers only all work in one sequence — code, cashback decision, threshold.
03
Thirty-day retailer window, 14-day EU withdrawal, 60-120-day card dispute. The cheapest price is the one still protected when something goes wrong.
A discount is real only if today's price beats what the item actually sold for, not the crossed-out number beside it.
Price-history trackers sample a listing every 1-6 hours and store 12-24 months of results. That record is long enough to show what the item sells for week after week — the only baseline a discount should be measured against.
The pattern to catch is the raised anchor: a list price lifted weeks before a '50% off' event, so the sale price lands close to the everyday one. A history chart exposes it in seconds, because the pre-sale jump appears as a step up just before the promotion.
Read the chart against the typical selling price, not the peak. If today's price sits at or below the level the item returns to between promotions, the discount is genuine; if it merely undercuts a recently inflated list price, wait for the next cycle.
List price lifted weeks before a '50% off' event, so the sale price matches the everyday one. A 12-24 month history chart exposes the step-up in seconds.
A sitewide code can void cashback or affiliate attribution even though both look compatible. Check the discount line before payment to see what actually applied.
Free-shipping bars sit at $25-50, a few dollars above the typical cart. The extra item feels like a bargain; the maths says it is a fee.
Cashback of 1-10% is not a discount at the till. It lands only after the 30-90 day return window closes — and vanishes if a code killed the attribution.
Shipping, taxes and fees appear at the last screen — the reason 48% of abandoning shoppers give. Compare delivered totals, never product-page prices.
A fault found on day 31 of a 30-day return window is a full-price loss. Diary the 30-day, 14-day and 60-120-day clocks the day the order ships.
A discount is real only when today's price beats the item's own history — not the crossed-out number beside it.
The cheapest price is the one that survives the checkout screen and the return window.
| Lever or deadline | Typical value | What decides whether it holds |
|---|---|---|
| New-customer or newsletter code | 10-15% off | One code per order; a sitewide code may void cashback |
| Cashback | 1-10% of order value | Paid only after the 30-90 day return window closes |
| Free-shipping threshold | $25-50 domestic | Set a few dollars above the shop's typical cart |
| Price-history coverage | 12-24 months, sampled every 1-6 hours | Long enough to catch a list price raised before a sale |
| Retailer return window | 30 days; 60-90 days for holiday buys | Item unused, tags attached |
| EU statutory withdrawal | 14 days from delivery | Refund within 14 days of notice, minus proven deduction for use |
| Card dispute window | 60-120 days from transaction | Depends on card scheme and reason code |
| Cart abandonment | 69.99% average; 48% blame extra costs | Shipping, taxes and fees revealed at checkout |
The figures cited trace to Directive 2011/83/EU, card-scheme dispute rules and Baymard Institute's pooled checkout research.