A guide to using Nabnook
How to Read Price History and Deal Scores
Use prices saved for a tracker as context when you evaluate a purchase. You can enter prices manually. Amazon checks are currently unavailable until a supported Amazon API and authorized owner credentials are connected.
Read the history as a record
Each price in a tracker’s history is a saved observation with a timestamp. You can add one manually. An Amazon check requires a supported API and authorized owner credentials; checks are currently unavailable. Gaps between observations remain unknown, and missing prices are never filled in.
Understand what the deal score uses
The score runs from 0 to 100. For one tracker, it combines the latest valid saved price against that tracker’s target with the latest price’s rank among earlier saved observations for the same tracker.
A score needs at least three valid observations spanning seven full days. With less evidence, it is unavailable; a missing score is not a judgment about the product.
Check the purchase details
Before buying, use the history as one piece of context and check the current listing for yourself:
- Confirm the exact product and variant.
- Review the seller’s listing.
- Check the current price and total cost.
Keep the limits in view
The deal score is an estimate from your own saved history for that tracker. It is not a retailer-wide comparison or a prediction of future prices, and it cannot guarantee a deal or promise savings.
Start with a tracker
Save a product and add prices manually to build its history. Amazon checks will remain unavailable until supported Amazon access and owner-authorized credentials are set up.
Open product tracker