Upselling is a sales strategy where you persuade a customer to purchase a higher-end or upgraded version of what they originally intended to buy. When a seller says, "For just a bit more, you can get the premium version with these extra features," that's upselling in action.
Here's a practical example. You're shopping online for a smartphone and you've selected a 20,000 taka model. The website shows you a popup: "Upgrade to the 25,000 taka version and get a bigger battery plus an advanced camera." If you go for that upgrade, the seller just successfully upsold you.
Upselling is extremely common in online retail and it works — for both parties. The seller increases their revenue, and often the customer ends up with a genuinely better product. The key is relevance. Upselling works best when the upgrade offers real value to the customer. Push too hard or offer irrelevant upgrades, and you risk annoying buyers. Done right, it's a win-win that boosts your AOV significantly.