The historical price notebook
Explore monthly observations, not today’s offers. Every result represents a group of providers—not a seller or product recommendation.
How to read this
Completed UTC months ending at least 30 days ago. One observation per source-local listing per month; each provider contributes one median. At least 5 providers and 20 samples per displayed group. The range is the middle 50% of provider medians, not minimum and maximum offers.
Currency is stored as CAD; legacy imports may have defaulted to CAD without explicit source confirmation. Unreviewed imports remain separate from reviewed records. Geography was not preserved in these observations and is shown as unrecorded. Older authorized-retailer observations lack immutable package dimensions and are excluded. These are changing convenience samples, not representative market estimates.