We tracked every Aussie deal for a week. Here's what stacking actually saves.

Most of us click "apply coupon" at checkout and move on. SaveCombo's bots watch the same deals and check what else you could be doing — cashback, card offers, points, gift card multipliers, price-beat policies. Here's what we found across 128 deals in the last seven days.

in extra savings, on top of the listed sale prices, across deals where we know the recommended retail price. Buy every stackable deal we tracked last week and remember every layer at checkout, you'd have spent $14,751 for ~$17,745 worth of stuff.

Most deals stack at least two layers

Of the 128 deals we tracked: 59% have two or more savings layers — never just a sale price. 53 of them stacked four or more. The deepest single stack last week was 13 layers on Celsius BC2 FID Bench $149 (Was $229) — that's $96 off the RRP.

What does a 13-layer deal look like?

Every layer is a public, verifiable Australian offer. No theoretical math.

Where stacking shines vs. doesn't

By category, last 7 days:

Pattern that holds week after week: electronics, home goods and gaming are where the deepest stacks live — multiple cashback platforms compete, price-beat policies exist, gift card discounts are routine. Groceries and travelusually cap at 1-2 layers; tighter margins, fewer reward programs that compound.Free deals (eBooks, free trials) are single-layer by definition — we track them, but they're not where stacking pays.

This week's biggest stacks

The math nobody tells you

A 25% sale looks like the deepest discount in the catalogue. Stacking changes the equation — discounts compound multiplicatively, not additively:

What you should actually do

Pick the 2-3 layers that match your shopping pattern. Cashback is the easy one — sign up for ShopBack or Cashrewards once and forget it. Card offers come automatically if you have the right card. Gift card discounts at the supermarket take 30 seconds and routinely save 5-10%.

The hardest thing isn't applying the layers. It's knowing they exist. That's what we built.