"Up-selling
(or cross-selling) is a sales technique whereby a salesman attempts
to have the customer purchase more expensive items, upgrades, or
other add-ons in an attempt to make a more profitable sale.
Up-selling usually involves marketing more profitable services or
products, but up-selling can also be simply exposing the customer to
other options he or she may not have considered previously.
Up-selling can imply selling something additional, or selling
something that is more profitable or otherwise preferable for the
seller instead of the original sale." -- wikipedia.com
Here's
a list with more information about Cross-Selling. Check it out.
