Funnel Building
Order Bump vs Upsell vs Downsell
These offers all increase customer value in different moments, but each should make the purchase more useful rather than merely more expensive.
Order bump
A small complementary add-on presented during checkout. It works best when the buyer can understand its value instantly.
Upsell
A post-purchase offer for a higher-value or complementary product. It should build logically on the first purchase.
Downsell
An alternate offer shown after someone declines an upsell. It can be lower-priced, smaller or structured differently.
Keep the customer journey coherent
Avoid stacking unrelated offers. Each additional purchase should solve the next sensible problem.