How prices become evidence.

This page documents the definitions behind Dipp's price history and deal rankings. The methodology was last reviewed on July 26, 2026.

Source and market

Dipp tracks product and offer information from Amazon.ca for Canadian shoppers. Prices are shown in Canadian dollars. Dipp is not the seller, does not control inventory and cannot guarantee the price that appears when you reach Amazon.ca.

Periodic checks

A recorded point is the price observed when Dipp checked a product. Checks occur periodically through the day, but the history is not a minute-by-minute record. The timestamp beside a price identifies the observation behind it.

“Lowest recorded” and reliable history

“Lowest recorded” means the lowest price Dipp has observed since it began tracking that product. It does not claim to be an all-time Amazon low. Dipp waits for at least three recorded observations before using the history to judge whether a current price is close to that low.

Verified discounts

A verified deal is currently available and at least 5% below the reference list price returned for the offer. Because reference prices can be imperfect, Dipp also presents its own recorded low and does not treat the percentage alone as proof of value.

Ranking

Deal order combines current discount, proximity to Dipp's recorded low, freshness, brand recognition, Amazon fulfilment and recent shopper interest such as views, saves, alerts and outbound clicks. Logarithmic weighting prevents one popular product from permanently overwhelming a page, and category listings limit repeated products from the same brand.

Corrections and limitations

Variant changes, third-party sellers and rapid offer updates can produce temporary mismatches. Dipp retries scheduled checks and labels unavailable products instead of presenting stale inventory as current. A public corrections contact will be added when Dipp's receiving mailbox is operational; until then, no reply address is presented as a support channel.