Quick comparison
- Cart upsell — discounted add-on shown when a trigger product is in cart; scoped discount; best for aging inventory
- Bundle — fixed multi-SKU offer, often planned upfront; best for known complementary sets
- Clearance sale — store-wide or collection-wide markdown; fast but margin-heavy
When to use each strategy
Use bundles when you know two products always sell together. Use clearance when you need to exit a category quickly and can absorb margin loss. Use cart upsells when specific SKUs sit too long but you do not want to discount everything.
Why cart add-ons work for aging inventory
Cart add-ons appear at high intent — after the customer adds a bestseller. You move stale units without training shoppers to expect store-wide sales. Scoped discount codes keep the markdown limited to the add-on SKU.
StockLift is built for this use case: detect slow movers, suggest bestseller pairings, activate scoped cart offers, and track recovered revenue from paid Shopify orders.
Frequently asked questions
Do cart upsells replace bundles?
No. Bundles are great for planned sets. Cart upsells are better for moving specific stale SKUs without rebuilding your catalog structure.