How We Analyze Prices
Every recommendation on Promo Radar is based on real pricing data, not opinions. Here is how we turn that data into something useful for you.
Where the data comes from
We use a third-party provider that tracks Amazon prices across 11 marketplaces. For each product, we get the current Buy Box price, a 90-day price history, and signals like active coupons and lightning deals.
How we judge whether a price is favorable
We compare today's price against the recent 90-day average. If active coupons or lightning deals apply, we factor those in so you see the real effective price.
Buy — Price is meaningfully below its recent average
Hold — Price is close to its recent average
Wait — Price is above its recent average
How confident we are
Not every recommendation carries the same weight. A product tracked for 90 days gets a firmer call than one tracked for a week. When the evidence is thin, we say so — the label changes and the language gets more cautious.
How we pick homepage products
The homepage shows curated sections — Best Deals, Trending, and Smart Picks — each with different priorities. Best Deals favors deeper discounts. Trending favors popularity. Smart Picks favors data quality. All sections filter for freshness and diversity so the same brand or product family does not dominate a rail.
What we cannot do
- We cannot predict future prices — only compare against recent history
- Our data may be up to 24 hours behind real-time Amazon prices
- New or niche products may have limited history for a reliable comparison
- We track the Buy Box price, not every third-party seller offer