A store offers 25 percent off on all prices,and then crosses off those signs and writes "50 percent off" above them.What technique is this?

Name: A store offers 25 percent off on all prices,and then crosses off those signs and writes "50 percent off" above them.What technique is this?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The technique used is "That's not all," where an initial offer is improved upon before the customer makes a decision, making the deal seem more attractive.

A Store Offers 25 Percent Off on All Prices,and Then