Why every Australian deserves access to grocery price data
The ACCC v Coles ruling proves Australia's grocery market needs independent price monitoring. The Pinch API is infrastructure for accountability.
The Federal Court's ruling against Coles on 14 May 2026 was not just about one retailer. It is evidence that Australia's grocery market needs independent price monitoring as basic infrastructure. When there is no transparency, the court found, misleading pricing practices can go undetected for years.
The Coles ruling exposed a structural problem.
Justice Michael O'Bryan's decision found that Coles misled customers across 245 products over a 15-month period by temporarily spiking prices then offering "Down Down" promotions that were at or above the prior price. The court found misleading conduct in 13 of 14 promotional tickets examined.
The conduct relied on a simple asymmetry: Coles had the price history, and customers did not.
How the pattern works
The "discount" leaves you paying more than before. Without price history, you cannot tell.
Illustrative diagram based on the pricing pattern described in the Federal Court findings (ACCC v Coles). Prices simplified.
Most customers could not see that a product had been $4 for close to 300 days before it was briefly $6 and then "discounted" to $4.50. Without access to real price history, the promotional tag was all they had to go on. The ACCC had to pursue a years-long court battle to prove what would have been visible from the price data alone.
This is not just a Coles problem.
The ACCC has brought separate civil proceedings against Woolworths alleging similar misleading pricing conduct involving 266 products under its "Prices Dropped" program. That case has not been determined and no findings have been made.
But the structural incentives that enabled the conduct the court found at Coles exist across the industry. Pinch has identified 230 products currently on "special" at both Coles and Woolworths where the sale price is higher than what customers were paying 6 to 18 months ago.
From Pinch's own tracking: 6 products where the "special" is a price increase.
| Product | Retailer | Old price | Shelf now | "Special" | Tag says | Actually |
|---|---|---|---|---|---|---|
| Sunscreen Lotion SPF 50+ | Coles | $9.50 | $22.00 | $15.40 | 30% off | +62% |
| Lamb Leg Roast | Woolworths | $24.00 | $39.60 | $33.00 | 17% off | +38% |
| Weight Loss Shake Variety | Coles | $15.00 | $35.00 | $21.00 | 40% off | +40% |
| Coconut Water | Woolworths | $1.70 | $2.65 | $2.35 | 11% off | +38% |
| Kit Kat Chunky Bar | Coles | $1.25 | $3.00 | $1.50 | 50% off | +20% |
| Beef Brisket Slow Cook | Coles | $18.20 | $25.20 | $22.40 | 11% off | +23% |
Snapshot from May 2026. Price points from Pinch tracking data. These are 6 of 230 products currently showing this pattern. See the full list.
Price transparency changes behaviour.
When a retailer knows that every price change is being independently tracked, that pricing patterns are visible to journalists and researchers, that the next questionable promotion could become a news story, behaviour changes. Not because of morality, but because of mathematics: the cost of being caught is higher than the benefit of cutting corners.
The ACCC is effective, but the law is reactive. It catches violations after they happen. Enforcement takes years. Real accountability requires that pricing practices be transparent enough that concerning patterns become visible before they require a court case.
What independent price monitoring delivers.
Retailers track their pricing decisions internally. The question is not whether the information exists. It is whether Australians have access to it.
Independent price tracking based on publicly available retail prices can reveal the same patterns that took a Federal Court ruling to expose.
- Journalists investigating retail pricing practices need granular data across multiple retailers and time periods.
- Researchers studying inflation and inequality need real-time information about what Australians are actually paying.
- Consumer advocates need evidence to support complaints to the ACCC and submissions to parliamentary inquiries.
- Developers building price comparison tools need access to underlying data, not locked-down retailer search interfaces.
From court ruling to public infrastructure.
The court cannot catch every misleading pricing practice. But transparency can make them harder to sustain. The ACCC Chair said the ruling "has increased transparency and accountability" and is "very timely for all retailers" to ensure accurate pricing claims. In our view, the more durable accountability is an informed public with access to real pricing data.
Australia has strong consumer protection laws. The ACCC is capable and active. But enforcement is reactive by design. We are building toward the kind of transparency infrastructure that makes enforcement less necessary: where pricing patterns are visible to anyone who looks.
Build with grocery price data
The Pinch API provides access to real historical pricing data across Woolworths, Coles, ALDI, and Harris Farm. Built for researchers, journalists, developers, and consumer advocates who need Australian grocery price data.
Disclosure
Pinch was not involved in the ACCC v Coles proceedings. This article represents Pinch's analysis of the publicly available ruling. Pinch monitors publicly available retail pricing information. While we strive for comprehensive data, Pinch data should be verified independently before use in publications or formal proceedings.