Marketing

Upselling/Cross-selling

What it is

Leveraging the commitment momentum of an existing purchase decision to increase the total transaction value.

How it works

Once someone has decided to buy, they are psychologically committed and their resistance to additional spending is lowered. "Would you like to upgrade?" and "Customers also bought..." exploit this commitment momentum. Each additional yes feels small relative to the original purchase.

Real-world examples

  • •"Would you like to supersize that?" adding 30% to a fast food order.
  • •E-commerce "frequently bought together" suggestions adding items at checkout.
  • •Car dealerships presenting extended warranties, protection packages, and accessories after the main purchase is agreed.

Ethical guidelines

  • ●Upsells should provide genuine additional value, not just extract more money.
  • ●Presenting upsells at the moment of maximum commitment is strategically timed to bypass deliberation.
  • ●Customers should never feel pressured or tricked into spending more than they intended.

How to defend against it

  • ►Set your budget before entering a purchase situation and stick to it.
  • ►Treat every upsell as a separate purchasing decision — would you buy this item independently?
  • ►Say "I'll think about it" to any add-on presented during checkout and evaluate it later.

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