Price watch

Updated 20 April 2026

Is Costco cheaper than Coles and Woolworths?

Costco membership costs $65/year. We compared prices on 20 items to see if you actually save money vs Coles, Woolworths, and ALDI.

The short answer

Costco saves you money on specific categories (meat, cheese, coffee, nappies) but costs you money overall. The average Costco trip is $200-400 vs $80-150 at Coles. You save per unit but spend more per trip because the warehouse layout is designed to make you buy more.

Only get a membership if all of these are true:

• You have a family of 4+ people
• You have a chest freezer or pantry space
• You live within 20 minutes of a warehouse
• You shop fortnightly (not weekly)
• You're willing to buy in bulk

Where Costco wins

We compared prices on 20 items across Coles, Woolworths, ALDI, and Costco. Costco came out ahead on:

• Meat - Bulk trays are 20-30% cheaper per kg than supermarket premium cuts
• Cheese - 1kg+ blocks of mature cheddar and parmesan (much cheaper per 100g than supermarket packs)
• Olive oil - 3L bottles cost less than half the per-litre price of 500ml bottles at Coles
• Nappies and toilet paper - Bulk packs are genuinely cheaper than bulk discounts at supermarkets
• Laundry detergent - Large bottles are 15-25% cheaper
• Coffee beans - Whole bean coffee is significantly cheaper than supermarket equivalents
• Nuts and dried fruit - Bulk bins are cheaper than packaged supermarket versions
• Kirkland brand items - Costco's house brand is excellent quality at low prices

Where Costco loses

• Fresh produce - Limited range, large packs only (risk of waste for smaller households)
• Small quantities - You can't buy one carton of milk or three eggs
• Delivery - Costco has no delivery service. You need a car and time
• Location - Only 15 warehouses in Australia. If you're more than 30 minutes away, petrol costs eat your savings
• Limited selection - Fewer SKUs than supermarkets means less choice on brands
• Annual fee - $65/year ($5.42/month) is a real cost that needs to be earned back

Costco vs ALDI

ALDI is often similarly priced on staples WITHOUT a membership fee. For a single person or couple without storage space, ALDI beats Costco on value because there's no bulk requirement and no annual fee.

However, ALDI's meat is thinner cuts and lower grade than Costco bulk trays. If you cook a lot of Sunday roasts or batch cook for the freezer, Costco wins on quality and price per kg.

Will you actually save money?

To break even on the $65 annual fee, you need to save $1.25 per week ($65 divided by 52 weeks). That's achievable if you spend $300+ a month at Costco and buy the right items. But the maths only work if you stick to the cheapest categories.

Here's the trap: Costco's warehouse layout is designed to make you impulse-buy. Most customers leave spending 2-3 times more than they planned. If you're an impulse buyer, you'll spend more overall even if unit prices are lower.

Our rough break-even math:

• Minimum spend to cover $65 membership: roughly $50/week (saving ~$2.50/week through bulk discounts)
• This assumes you're disciplined and buy only the items where Costco genuinely wins
• If you're buying everything at Costco (including areas where ALDI or Woolworths are cheaper), the $65 fee barely breaks even

Who should get a Costco membership

• Families of 4+ who shop fortnightly
• People with a chest freezer who buy and freeze meat in bulk
• Anyone who lives within 20 minutes of a warehouse (to minimise travel time and petrol cost)
• Households that consume a lot of coffee, nappies, or toilet paper
• People who plan menus around bulk buys (not impulse shoppers)

Who should skip Costco

• Singles and couples without storage space
• Anyone more than 30 minutes from the nearest warehouse (petrol cost eats savings)
• People who shop weekly (Costco favours fortnightly or monthly bulk shops)
• Impulse buyers (the layout is engineered to make you spend more)
• Anyone concerned about food waste (bulk packs often don't fit freezer space)

The hidden Costco trap

You save on unit price but spend more overall. Costco reports their average customer basket is $180-250 AUD per visit. Coles reports similar figures, but Costco members typically visit less frequently, so annual spend is higher. If you're going from weekly Coles visits ($80-150) to fortnightly Costco visits ($250+), you're spending more in total even if you're saving per unit.

The warehouse layout is designed this way intentionally. Wide aisles, slow checkout, and new seasonal items scattered throughout encourage browsing and impulse purchases.

Costco locations in Australia

Costco has 15 warehouses across Australia as of May 2026. Most are in capital cities (Sydney, Melbourne, Brisbane, Perth). Regional areas like Canberra have one warehouse, but rural Australia is unserved. Before committing to membership, check if there's one within 20 minutes of your usual shopping pattern.

The verdict

Costco is worth it if you're a family with storage space and live near a warehouse. You'll genuinely save money on meat, cheese, bulk staples, and nappies. But it's not worth it for singles, couples without freezer space, or anyone more than 30 minutes away. And if you're an impulse buyer, skip it entirely.

The safest option for most Australians is to use ALDI for staples (cheaper than Coles and Woolworths, no membership), and buy bulk meat and cheese direct from a butcher or cheesemonger when you find good prices. Use Pinch to track prices and spot deals at your local supermarket instead.