Price comparison
Coles vs IGA: Which Supermarket Is Cheaper?
Side-by-side grocery price comparison between Coles and IGA in Australia. Prices are tracked daily across thousands of products so you can see at a glance which supermarket wins on the categories you buy most.
As of 20 Sept 2026, Coles has the cheaper basket in Australia — about 7% lower ($25.30 vs $27.30) across 8 comparable categories, winning 4 of them outright.
Prices updated 20 Sept 2026
Basket = the cheapest in-stock item per category across the 8 everyday categories both Coles and IGA stock, using live prices re-checked within the last 21 days. Recalculated daily.
Quick Comparison
Coles products tracked
11,596
IGA products tracked
100
Head-to-head categories
8
Head-to-head by category
| Category | Coles | IGA | Cheaper at | You save |
|---|---|---|---|---|
| Soy Milk | $2.20 | $3.65 | Coles | $1.45 |
| Plant-Based Milk | $2.50 | $3.65 | Coles | $1.15 |
| Lactose-Free Milk | $3.90 | $3.15 | IGA | $0.75 |
| Long Life Milk | $3.00 | $2.80 | IGA | $0.20 |
| Oat Milk | $2.00 | $2.20 | Coles | $0.20 |
| Almond Milk | $3.00 | $3.15 | Coles | $0.15 |
| Evaporated & Condensed Milk | $4.00 | $4.00 | Same price | — |
| Flavoured Milk | $4.70 | $4.70 | Same price | — |
- Soy Milk
- Coles
- $2.20
- IGA
- $3.65
Cheaper at Coles — save $1.45
- Plant-Based Milk
- Coles
- $2.50
- IGA
- $3.65
Cheaper at Coles — save $1.15
- Lactose-Free Milk
- Coles
- $3.90
- IGA
- $3.15
Cheaper at IGA — save $0.75
- Long Life Milk
- Coles
- $3.00
- IGA
- $2.80
Cheaper at IGA — save $0.20
- Oat Milk
- Coles
- $2.00
- IGA
- $2.20
Cheaper at Coles — save $0.20
- Almond Milk
- Coles
- $3.00
- IGA
- $3.15
Cheaper at Coles — save $0.15
- Evaporated & Condensed Milk
- Coles
- $4.00
- IGA
- $4.00
Same price at both
- Flavoured Milk
- Coles
- $4.70
- IGA
- $4.70
Same price at both
Want the full picture?
Browse every grocery product OpenOrder tracks across Australia supermarkets — with live unit-price comparisons.
Frequently asked questions
- Is Coles cheaper than IGA?
- As of Sep 20, 2026, Coles is cheaper overall for a like-for-like grocery basket — about 7% less ($25.30 vs $27.30) across 8 comparable categories tracked daily in Australia.
- How much cheaper is Coles than IGA?
- On a comparable basket of 8 everyday categories, Coles totals $25.30 versus $27.30 at IGA — about 7% ($2.00) cheaper. Savings vary by category; see the per-category breakdown below.
- Which is cheaper for Soy Milk?
- For Soy Milk, Coles is cheaper at $2.20 versus $3.65 — a saving of $1.45.
- How is the basket comparison worked out?
- Basket = the cheapest in-stock item per category across the 8 everyday categories both Coles and IGA stock, using live prices re-checked within the last 21 days. Recalculated daily.
Prices updated daily. Last updated Sep 20, 2026.