Sector coverage
US grocery pricing and pack-size data
Data Purl is rolling out US grocery coverage by Thanksgiving 2026 (26 November). Grocery products are placed in the same category tree as every other sector and pack sizes are standardized, so category inflation can be measured on a matched-SKU, price-per-unit basis, with shrinkflation and private label pricing visible.
Rolling out by Thanksgiving 2026What is tracked
- Shelf prices standardized to price per ounce, per 100g or per liter
- Pack-size changes on otherwise identical products
- Private label versus branded price gaps by category
- Promotions and availability
Questions it answers
- How much has a specific grocery category inflated on a like-for-like basis?
- Which categories show shrinkflation, and how much does it add to real price increases?
- Is private label gaining shelf space and widening its price gap?
Key metrics
- Matched-SKU inflation (same-SKU price change): The price change of identical products observed in both periods, which isolates true price moves from changes in product mix.
- Shrinkflation: A price increase delivered by reducing pack size while keeping the shelf price the same or similar.
- Private label share: The share of a retailer's assortment in a category made up of its own-brand (private label) products.
- Price gap: The percentage difference between the price of one product or brand and a comparable alternative, such as branded versus private label.
Check us grocery coverage for your names
Send us the brands, retailers or companies you follow and we will confirm exactly what is covered and from when.