What they are
Order bumps and upsells are small offers placed at and just after checkout that raise the average value of each order, without needing any extra traffic.
They all move one number: average order value, or AOV, which is simply your total revenue divided by your number of orders. Raising it is the cheapest growth lever you have, because it adds revenue per buyer you have already paid to acquire. Three tools do the work, and they are easy to mix up, so here is each in one line.
The distinction worth memorizing: a bump is small and comes before you pay, on the checkout page. An upsell is bigger and comes after you pay, on its own page. A downsell is the rescue offer if the upsell is a no. In strict terms many bumps and upsells are technically cross-sells, but in everyday use people call any point-of-purchase add-on an "upsell," and so will this guide.
Where each appears in the flow
Placement is what defines each one. Here is the order they appear in, from the sales page to the confirmation. The blue boxes are the paid steps.
The buyer reaches the checkout page and enters their card. The order bump sits right there, a checkbox near the buy button, so ticking it adds the item to the same charge. When they submit the order, a one-click upsell page appears before the thank-you page. Because the card was captured a moment ago, accepting the upsell charges the saved card with a single click, with no second checkout. If they decline, a downsell can offer a cheaper version. Finally the thank-you page confirms everything they accepted along the way.
That one-click mechanic is the load-bearing part. A true one-click upsell asks for the decision again without re-asking for the payment details. The moment an offer makes someone re-enter their card, it stops being an upsell and becomes a second sale, which converts far worse.
Why they work
The mechanism is purchase momentum. The hardest yes, deciding to buy and entering a card, has already happened, so every additional yes is far easier. The buyer is in an active, decision-making state, the friction of payment has already been paid once, and the offer arrives at the exact moment they have shown you what they want. It is the same instinct behind "would you like fries with that" and Amazon's "frequently bought together": a relevant add-on, surfaced right at the point of purchase.
Selling more to an existing buyer is also simply easier than finding a new one. The textbook Marketing Metrics puts the probability of selling to an existing customer at 60% to 70%, against just 5% to 20% for a new prospect. A bump or upsell captures that advantage at the one moment it is strongest, the seconds right after a purchase.
A note on numbers: vendors quote order-bump take rates around 30% to 40% and post-purchase upsell conversion in the high single digits, but those figures are self-reported and vary enormously by offer and audience. Treat them as a sense of scale, not a target, and watch your own average order value instead.
Order bumps in depth
A good order bump is an easy "why not," not a second buying decision. It is small, complementary, and instantly understandable, so ticking the box feels like completing the purchase rather than starting a new one. The classic example is a workbook offered alongside a course, or express shipping alongside a physical product: something that accelerates or completes what they are already buying.
A few rules make bumps work:
Strikethrough pricing helps too: showing the bump as a discounted price next to its "regular" value anchors it as a deal rather than an extra spend. Place it on the checkout page near the buy button, and test different bump products, the winner is often not the one you expected.
Upsells and downsells in depth
The highest-converting upsell is a single, relevant, one-click offer shown right after purchase. The "rule of one" applies: one clear offer beats a menu, because a menu reintroduces deliberation at the exact moment you want momentum. The offer should be either more of what they just bought (a bigger pack, the pro tier, a bundle) or the obvious next step in their journey (the course they bought, then the coaching that helps them apply it). Small wording choices matter: "Add to my order" tends to beat "Buy now," because it frames the upsell as extending the order they already own rather than starting a fresh purchase.
How much should an upsell cost?
There are two rules of thumb for two different jobs, and they only look contradictory until you separate them. For a small impulse upsell, keep it at roughly 25% or less of the original order, so it stays an easy add-on. For a premium next-step upsell that delivers a real upgrade, you can go higher, often two to three times the first offer, because a committed buyer can absorb a larger, genuinely valuable offer. Match the price to which kind of upsell you are actually making.
The downsell, and how many to offer
When the upsell is declined, a downsell recovers part of that "no" with a cheaper item or a payment plan, for example offering a $47 mini-course after someone passes on a $197 course. It only fires on a decline, so it costs nothing to have. The one hard limit is volume: cap the post-purchase sequence at about two or three offers. Beyond that you overwhelm the buyer and total sales fall rather than rise. A clean, effective stack is one bump, one upsell, and one downsell.
Three example stacks
Here is how the pieces fit together for three common businesses. Prices are illustrative, to show the relationships, not fixed rules.
| Business | Core offer | Order bump | Upsell | Downsell |
|---|---|---|---|---|
| Course creator | $97 course | $27 workbook + templates | $197 coaching add-on | $47 group Q&A pass |
| Ecommerce | $60 skincare set | $12 travel size | Second set, 25% off | $19 single refill |
| Coaching | $300 strategy session | $49 prep assessment | $900 3-session package | $150 single follow-up |
Notice the pattern in each row: the bump is a cheap complement to the core offer, the upsell is the next real step up, and the downsell rescues the buyer who is not ready for that step. The same shape works whether you sell digital products, physical goods, or your time.
The math is what makes it worth the effort. In the course example, a single buyer who takes the bump and the upsell turns a $97 sale into $321, more than three times the original order, from offers that cost nothing extra to put in front of them. Even if only a fraction of buyers accept each one, that lift compounds across every order and flows straight to the bottom line, because the traffic was already paid for. That is why a funnel with a working bump and upsell can profitably outspend a competitor who sells only the core product.
How to set them up, step by step
Build the stack around one clear purchase. Each piece below only makes sense in relation to that core offer.
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Pick your core offer
Choose the single product the whole funnel is built around. Everything else complements this one purchase, so the bump, the upsell, and the downsell all take their cue from it. Without a clear primary offer, the add-ons have nothing to relate to and feel random.
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Choose a complementary order bump
Select a cheap, relevant add-on priced at roughly 20% to 40% of the core offer. It should accelerate or complete the main purchase, a workbook for a course, express handling for a product, a prep assessment for a session. The test is whether a buyer would think "yes, obviously" rather than "wait, what is this?"
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Write and place the bump on the checkout page
Add it as a single checkbox near the buy button, with a two to three sentence description and strikethrough pricing that signals a deal. Keep it visually distinct but clearly secondary, so it gets noticed without ever competing with the main buy decision.
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Create one relevant one-click upsell
Build a dedicated upsell page that fires immediately after the order form, offering either more of the same or the next logical product. Lead with a single benefit, use "Add to my order" wording, and price it to match whether it is a small impulse add or a premium next step.
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Add a downsell for the decline
Configure a cheaper item or a payment plan that appears only if the buyer declines the upsell. This recovers revenue from hesitant buyers without any downside, since it never shows to the people who already said yes. A mini-version of the upsell, or the same offer split into payments, both work well.
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Keep every post-purchase step one-click
Make sure the saved card carries through, so no offer re-asks for payment or shipping details. Every extra step loses a large share of interested buyers, so protect the one-click flow above all else, and cap the whole post-purchase sequence at two or three offers.
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Test and track average order value
Measure your take rates and your average order value, then test in priority order: the offer and product first, then the price or discount, then the button copy. Average order value is the scoreboard, so swap out underperforming bumps and upsells until the revenue per order climbs.
Common mistakes to avoid
Most underperforming upsell stacks make the same mistakes. Check yours against this list.
An irrelevant offer. Pitching something unrelated to what they just bought. Relevance is the single biggest driver of take rate, and breaking it tanks the whole stack.
Too many offers in a row. More than two or three post-purchase offers overwhelms the buyer and reduces total sales instead of adding them.
An order bump priced too high. A bump above roughly 40% of the main offer becomes a second buying decision rather than an easy impulse add.
Adding friction. Any step that re-asks for card or shipping details collapses conversion. If it is not truly one-click, it is not an upsell.
Being greedy at the checkout. Cramming bumps and aggressive offers onto the checkout page can suppress the first purchase itself, which is the sale that matters most.
No downsell. Treating a declined upsell as a dead end leaves recoverable revenue on the table. A cheaper alternative costs nothing to offer.
Build it in systeme.io
Order bumps and one-click upsells, built in
You do not need a separate cart tool to raise order value. systeme.io's checkout includes order bumps, one-click upsells, and downsells on the free plan, so you can add them to any funnel and keep the card-on-file mechanic that makes them work.
These add-ons live inside a bigger funnel. See sales funnel examples for where they fit, or the tripwire funnel, where the bump and upsell do most of the earning.
Frequently asked questions
An order bump is a small, complementary add-on offered as a checkbox on the checkout page, before you pay. The buyer ticks the box and it is added to the same transaction in one click, with no extra page and no second card entry. It works best as a cheap impulse item priced at roughly 20% to 40% of the main offer, such as a workbook alongside a course.
A one-click upsell is a follow-up offer shown right after the first purchase, on its own page, that the buyer can accept with a single click because their card is already on file. There is no second checkout. That one-click mechanic is the whole point: it asks for the decision again without re-asking for the payment details, which is what keeps post-purchase conversion high.
An order bump is small and appears before payment, as a checkbox on the checkout page. An upsell is bigger and appears after payment, on its own one-click page. The bump is a low-friction impulse add-on, while the upsell is a more significant offer that earns its own pitch. Most funnels use both: a bump on the checkout, then an upsell right after.
A downsell is a cheaper or payment-plan version of an offer, shown only if the customer declines the upsell. It recovers part of a sale you would otherwise lose. For example, if someone declines a 197 dollar course upsell, the downsell might offer a 47 dollar mini-version or the same course split into three payments.
An upsell sells a better or bigger version of the same thing, such as upgrading a course to the pro tier. A cross-sell sells a complementary but different product, such as adding a separate workbook. In practice, order bumps and post-purchase offers are often cross-sells by this strict definition, which is why most people use the word upsell loosely to mean any add-on offered at the point of purchase.
There are two rules of thumb for two different jobs. For a small impulse upsell, keep it at roughly 25% or less of the original order so it stays an easy yes. For a premium next-step upsell that delivers a real upgrade, you can price higher, often two to three times the first offer, because a committed buyer can absorb a larger, genuinely valuable offer. Match the price to which kind you are making.
A relevant, one-click post-purchase upsell does not touch your initial conversion, because it fires after the first sale is already complete. The first purchase is locked in before the upsell ever appears. Only friction-heavy upsells that re-ask for payment, or irrelevant offers that feel like a bait and switch, cause harm, and that harm is to trust and order value, not the original sale.
Cap the post-purchase sequence at about two or three offers. More than that overwhelms the buyer and tends to reduce total sales rather than add them. A common, effective stack is one order bump on the checkout, one upsell right after, and a downsell that only appears if the upsell is declined.