One click upsell and order bump funnels.

An order bump is a small complementary offer added with one click on the checkout page, before payment. It is the cheapest revenue in the funnel because the buyer is already at the point of purchase and no additional traffic was bought to show it.

Upselling offers a higher-value or expanded version of what the buyer is already purchasing. In AtomicPay the upsell runs after approval, so it extends the buyer journey without adding friction to the transaction that already succeeded.

A one-click upsell is a post-purchase offer the buyer can accept without re-entering payment details, because the card is already authorised. Removing the payment form is exactly why post-purchase upsells convert far better than a fresh checkout would.

Cross-selling offers a related but different product alongside the purchase, where upselling offers more of the same thing. A course buyer being offered a companion toolkit is a cross-sell; being offered the premium tier is an upsell.

A downsell is a cheaper alternative presented when a buyer declines the upsell — a lighter package, fewer modules, or a payment plan. It recovers revenue from buyers whose objection was price rather than interest.

Stack bumps, upsells, and downsells around a checkout that already converts. Because these offers reach buyers you have already paid to acquire, raising average order value improves your return on ad spend without touching the traffic side at all.

An upsell funnel is the connected sequence of checkout, order bump, upsell, and downsell steps a buyer moves through in one session. AtomicPay lets you publish draft and active versions separately and preserves attribution and seller data across every step in the chain.