A common sales practice whereby a seller tries to get the customer to order a more expensive item in addition to or in lieu of the requested item. The following are all very common examples of upselling.

In the retail industry, upselling is a way of counteracting the low margins of some products. Most of the items mentioned above have a trivial cost (two cents' worth of soda for 25 cents more) and are almost entirely profit. Many employees get bonuses based on their ability to upsell. While this is frowned upon by many customers, it is not illegal. There are many rules that separate upselling from bait and switch tactics, namely that upselling can always be refused.