How we calculate
Last updated 12 October 2026
FindNuro is a research tool. Prices, sales ranks, reviews and fees are observed marketplace data from licensed third-party marketplace data providers. Sales, revenue, profit and the opportunity score are estimates: they are marked "est.", they show how they were made, and they are never Amazon-verified. When we don't have the data for a number, we show "Unavailable" instead of guessing.
Monthly sales estimates
Each estimate is labelled with how it was made:
- Modeled from sales rank. For each category Amazon ranks products in, we fit a curve that turns sales rank into monthly units, using Amazon's "bought in past month" figures as calibration. The curve also accounts for variation families (Amazon gives a family one sales rank but shows "bought in past month" per item). We only use a category's curve when it is fitted on at least 30 products and explains at least half of the variation in the data. When a product shows Amazon's figure, the estimate stays within it (for example, "300+ bought" means 300 to 399).
- Minimum, from Amazon badge. When there is no reliable curve, we show Amazon's "bought in past month" figure as a minimum.
- Minimum, from sales-rank drops. Without either, we count how often the sales rank improved in 30 days. Each improvement needs at least one sale, so this is a minimum. We show it, but we don't score a product on it.
These curves have not yet been checked against sellers' actual sales, and Amazon's figures are rounded buckets, so treat every estimate as a range, not an exact number.
Revenue and profit
Estimated revenue is estimated units times the current price. Profit uses the product's own referral fee and FBA fee from our data provider (plus Amazon's minimum referral fee) and default assumptions you can change: supplier cost 25% of the price, freight 5%, advertising 10% and returns 3%. If a product's fees are missing, we don't show a profit for it.
Opportunity score and confidence
The 0–100 score ranks research candidates. It is not a prediction of your sales or profit. It combines:
| Part | Weight | What scores higher |
|---|---|---|
| Demand | 22% | more estimated monthly sales |
| Review barrier | 18% | fewer reviews across the variation family, and slower review growth |
| Estimated margin | 20% | higher margin under the default assumptions |
| Seller crowding | 10% | fewer sellers, and Amazon not selling the item |
| Price stability | 10% | steadier prices over 90 days |
| Sales-rank trend | 10% | rank improving over 90 days (not used for seasonal products) |
| Product risk | 10% | no flags for size, hazmat, a dominant brand, seasonality or an entrenched best-seller |
Products ranked in the top 100 of their category are capped at 60, because established best-sellers are hard to displace. A product isn't scored without a sales estimate or when less than 60% of the inputs are available.
Confidence (high, medium or low) depends on two things: how many of the inputs are available, and how good the sales estimate is. A score whose sales figure is only Amazon's "bought in past month" minimum is always low confidence. High confidence needs a category curve that fits well on a large sample.
Brand share
Brand share is a brand's share of estimated revenue among the products we track in the same niche (the narrowest part of the category tree with at least 10 tracked products). We show how many products it is based on. It is not a share of the whole Amazon category.
Seasonality and history
We keep up to a year of price and sales-rank history per product, plus Amazon's "bought in past month" history. A product is flagged as seasonal when its best three months average at least 2.5 times a typical month and the peak repeats the next year, or has clearly passed. With less history we say so; words in the title are only a hint.
What we can't tell you yet
- Buy Box seller type and share, and the number of FBA and FBM sellers. We don't collect that data yet, so those filters are hidden.
- Whether a category or brand is restricted (gated) for your account.
- Keyword search volume. Our data provider doesn't offer it, and we don't make it up.
- Actual sales. Only Amazon and the seller know them.
If a number looks wrong, email contact@shahidanwaruniversity.com with the product's ASIN and we'll look into it.