The order bump on a sales page: the checkbox that lifts your average order value

A creator sells an ebook for €27. The visitor has filled in their payment details and is one click from completing the purchase — and that's exactly when a discreet checkbox appears: “Add the pack of 12 actionable worksheets for €9 more.” No new page, no new form, just a checkbox. That's an order bump: one of the few upsell techniques that lifts average order value without adding any friction to the checkout flow. Here's how to add one to an ebook, course, or coaching sales page without scaring the buyer off at the most fragile moment of the funnel.

Order bump, upsell, cross-sell: three mechanics that get confused

All three aim to increase cart value, but they happen at different moments and demand different levels of friction. An upsell offers a higher-tier version of the product — usually on a dedicated page or screen, right before or after checkout, with its own pitch. A cross-sell recommends a complementary product, typically after the purchase, in an email or on a thank-you page. An order bump lives inside the checkout form itself: a checkbox, a modest price, one click — no new page, no re-entering a card number.

Why a checkbox converts better than a new offer

The explanation has less to do with price than with where the checkbox sits. The visitor has already made their hardest purchasing decision; they've just pulled out their card, and they're in a committed state of mind, not a hesitant one. A 2011 study by John Wells, Veena Parboteeah, and Joseph Valacich, published in the Journal of the Association for Information Systems, shows that the likelihood of online impulse buying depends heavily on perceived site quality and the amount of friction at the moment of decision: the less effort an action requires, the more likely it is to be accepted on impulse (Wells, Parboteeah & Valacich, 2011). Redirecting to a new page, even a short one, reintroduces exactly the kind of friction an order bump is meant to avoid — we cover this mechanism in more depth in our article on cognitive load on a landing page.

A price that barely registers

A good order bump costs between 20 and 40% of the main offer's price, never more. The reason isn't only anchoring against the main price (we cover that in our article on price anchoring): it's also a matter of mental accounting. Richard Thaler, in his foundational 1985 paper published in Marketing Science, shows that people prefer to bundle multiple losses into one rather than experience them separately — a small expense added to a purchase already decided hurts far less than the same expense faced alone, as a purchasing decision in its own right (Thaler, 1985). €9 added to €27 in the same instant is a line item; €9 asked for alone the following week is a brand-new purchase decision.

What makes a good order bump

• Tied to the main offer — a logical add-on, never an unrelated product thrown in “because it can be sold.”
• Visibly cheaper — never more than 30-40% of the main price, or the decision turns back into real deliberation.
• Zero new input — same card, same form, one checkbox and nothing else.
• Benefit in one sentence — no pitch, just one line explaining the concrete difference it makes.
• Never essential — if the main offer doesn't work without the bump, it isn't a bump, it's an offer artificially split in two.

The checkbox must never come pre-checked

It's tempting to pre-check the box to maximize the take rate — it's also the surest way to lose a buyer's trust once they notice, and to trigger refund requests. The law explicitly addresses this practice: Article 22 of EU Directive 2011/83/EU forbids traders from pre-ticking a box for an additional payment, and entitles the consumer to a refund if express consent was not obtained. The same principle we cover for pre-checked boxes in forms applies directly to payment: the checkbox stays unchecked by default, full stop.

Three examples for an ebook, course, or coaching sales page

• Ebook at €27 → order bump at €9: a pack of worksheets or templates — the extra work a reader would otherwise do by hand, just packaged.
• Online course at €197 → order bump at €47: access to a recorded Q&A session, or a printable version of the program.
• 1:1 coaching at €400 → order bump at €60: an audio recording of the sessions, or a written audit sent before the first call.

Where to place it on a sales page

Only one placement really works: right before the final payment button, once every objection has already been addressed higher up the page — we cover this section-by-section structure in our articles on the ebook sales page and the coaching sales page. Never offer it mid-pitch: the visitor hasn't decided to buy the main offer yet, so proposing a side option only delays the real decision. And above all, one checkbox, one offer: stacking multiple checkboxes reintroduces the paradox of choice we document elsewhere, and drives the take rate down instead of up.

The LanderKit Ebook & Infoproduct (demo) and Coach & Consultant (demo) templates already ship with a sales-page structure built for this kind of add-on. The Certified Training (demo) template works just as well for a certified course paired with a complementary module as an order bump.