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Guides to pulling Canadian grocery and Costco price data: running the scrapers, reading the fields, and getting the numbers into something you can use.
Ten staples, priced weekly, turned into an index. Including the two things that quietly corrupt a grocery price series if you don’t watch for them.
Read the guideThis one isn’t a scraper, it’s a matcher. How the confidence scoring works, how to filter on it, and how to get basket totals per store.
Read the guideTwelve banners share one input and one output shape. Which banner covers your region, the promo fields only this chain exposes, and how to join across banners.
Read the guideSame group, same platform, different prices. The same milk runs $7.99 at Save-On-Foods and $8.49 at Urban Fare on the same day in the same city.
Read the guideThe catalogue the mainstream Canadian scrapers skip. Also the three limitations I’d want to know before building anything on it.
Read the guidePaste the input, get rows back. Then the three things that cost me time, and where the unit prices come from, since Costco publishes none.
Read the guideThese guides all run against the same APIs: 16 Canadian grocery chains plus Costco, with a sample record for each.
See the grocery data API