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 marketplace pricing data provider that tracks prices across all major Amazon marketplaces. This gives us the current price you would pay, a 90-day price history, and signals like active coupons and lightning deals.
How we compare prices
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. Products with a full 90 days of pricing history get stronger recommendations. Products with limited or incomplete data get weaker, more cautious language. We never overstate what the data supports.
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 24-48 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