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“Blend Commerce deliver real value from day one. The practical, actionable information they share in their emails is remarkable.
- Subscription sign-ups increased by 61%.
- Overall store conversion rate improved by 14%.
The most impressive part is that we achieved all of this purely by using the data and tools Blend make freely available.”
"And then I go and spoil it all... By saying somethin' stupid like, ‘I love you’"
Yip, that is what a lot of upsells and cross-sells do.
Everything is going to plan.
The customer is sold.
And then right at the end...
The website goes and does something stupid…
- A random add-on.
- An irrelevant cross-sell.
- A massive jump in price.
- A clunky pop-up they have to close just to carry on.
That is the risk with upsells and cross-sells.
Done well, they increase AOV.
Done badly, they annoy customers so much that they do not buy at all.
Dangerous territory.
Here are the 5 big mistakes (and one sneaky one)
1. You ask too early
If someone has just landed, they are not ready for an upsell.
They are still deciding if they want the original product.
So do not throw an offer in their face on page load.
Wait until intent is clear.
- On the PDP.
- In the cart.
- At checkout.
At the point where the offer actually helps the buying decision.
2. You make it feel like a shakedown
"Upgrade now." "Exclusive offer." "Don't miss out."
That sales-bro language is too pushy.
Use clarity instead.
A good upsell explains the value and feels helpful.
- Most customers add X to protect Y.
- Add X to get more out of Y.
3. You ask for too much
Someone adds a $50 product.
Then you hit them with a $300 upsell.
That is a whole new decision for them to chew on.
Creating decision fatigue.
Small steps get accepted more often.
Impulse purchases.
- One extra unit.
- A bundle upgrade.
- A relevant add-on.
More like a chocolate bar as you're checking out at the supermarket.
4. You give them too much to think about
- A carousel.
- A pop-up.
- A "you may also like" block.
- A few too many badges.
- A timer for absolutely no reason.
Noisy noisy noisy.
Weave upsells and cross-sells naturally into the user journey.
One relevant in-cart upsell usually beats six average suggestions.
5. You block progress
Customer clicks add to cart.
And now they have to deal with a modal before they can carry on.
That is rage-inducing friction.
Right in the middle of them buying.
Let them keep moving down the funnel.
If the upsell has to interrupt the journey to get attention, it is probably not a very good upsell.
6. The sneaky one - Revenue over profit
Sometimes an upsell gets accepted...
But you are worse off because of it.
- Maybe it’s bulky and causes additional shipping costs at your expense.
- Maybe the margin was lower than the free shipping you just conceded for it.
- Maybe it’s a toxic product that causes customers to churn or give you bad reviews.
It can look like a win on your AOV metrics...
But it’s actually a loss for the business.
Chat soon,
Peter
About the author
Peter Gardner Co-Founder and Chief Strategy Officer
Peter Gardner is the Australia-based co-founder and Chief Strategy Officer of Blend Commerce, the specialist Shopify CRO agency named Global CRO Agency of the Year 2026. He helps established Shopify brands improve conversion rate, average order value and repeat purchase by combining quantitative data, qualitative customer insight and structured experimentation.
Peter writes the Shopify CRO Newsletter and is known for the Buy Trifecta®, a framework focused on helping customers Buy Now, Buy More and Buy Again, while using prioritisation models such as PECTI to help brands focus on the highest-impact CRO opportunities.
Peter also co-founded the eCom Collab Club®, a dynamic eCommerce community that connects and empowers eCommerce professionals through events, networking opportunities, and educational resources.
“Blend Commerce deliver real value from day one. The practical, actionable information they share in their emails is remarkable.
- Subscription sign-ups increased by 61%.
- Overall store conversion rate improved by 14%.
The most impressive part is that we achieved all of this purely by using the data and tools Blend make freely available.”