Choosing a bundle discount strategy: fixed, percentage and tiered offers

The discount is the commercial layer, not the recommendation strategy

A discount cannot make an irrelevant bundle useful. Start with complementary products that fit the shopper's intent, then choose an incentive that makes adding more of that set attractive while protecting margin.

Fixed-value bundle discounts

A fixed saving gives the shopper a concrete monetary benefit, such as £10 off when two eligible products are bought together.

Best suited to

• Bundles with relatively predictable product values.
• Offers where a simple, tangible saving is easier to communicate.
• Merchants that want precise control over the maximum discount given.

Check that the saving remains meaningful across the eligible price range and does not disproportionately discount lower-value combinations.

Percentage bundle discounts

A percentage saving scales with the value of the eligible products. This can work well where bundle prices vary substantially because the incentive remains proportional to spend.

Best suited to

• Wide price ranges.
• Complete-look sets where shoppers may choose different combinations.
• Campaigns where the percentage itself is an established promotional message.

Because the absolute discount increases with basket value, merchants should model the margin impact on higher-value combinations.

Tiered multi-buy discounts

Tiered offers increase the reward as the shopper adds more eligible products. For example, buy two and save £10, then buy three and save £20.

Why tiers can increase AOV

The shopper can see a clear next threshold. A customer already considering two products has a specific reason to evaluate whether adding the third creates enough additional value.

Keep the number of tiers simple. Too many thresholds can turn a helpful incentive into a pricing puzzle.

Threshold-led offers

A merchant can also structure the incentive around eligible bundle spend, where supported by the promotion setup. This can be useful when product prices vary and the commercial objective is to increase basket value rather than item count.

Full-set versus partial-set incentives

Requiring every item can create a strong completion incentive but also makes the offer fragile. Allowing partial-set rewards gives shoppers more flexibility. RecoMelon's Bundle Rescue can further reduce fragility by providing suitable replacements when an individual item cannot remain in the set.

How Bundle Rescue should interact with discounts

A replacement product should remain eligible only when it satisfies the merchant's promotion rules. Test swaps across price points, variants, markets and stock states so a rescued bundle does not unexpectedly lose or misapply its offer.

A practical decision framework

• Use fixed savings when clarity and predictable discount cost matter most.
• Use percentage savings when eligible basket values vary and proportional value is preferable.
• Use tiered offers when the objective is to encourage an additional item or deeper bundle completion.
• Use threshold-led offers when spend matters more than item count.
• Use no discount when the complementary value is already compelling and an incentive is unnecessary.

Measure incrementally

Review bundle uptake, average products purchased, AOV, discount cost and influenced revenue. Where possible, compare the incentive against an equivalent bundle experience without the discount so the team can distinguish recommendation value from promotional subsidy.

Related guidance

See bundle strategies for increasing AOV, multi-buy offers with Bundles™ and Bundle Rescue.