Ranked by a deal-quality score: how far the cheapest in-stock retailer sits
below the typical price (median across 3+ retailers, or the
product's own 30-day typical for thinly-stocked ones), weighted by how many
retailers carry it and how tightly they're priced. A lone retailer pricing
to the moon can no longer fake a discount. Sold-out listings are excluded.
Canadian and US shops are judged in their own market and currency — a
product can deal in one, the other, or both.
18 deals.
