The fact that Annika and Karen use prices that end in 9 to get their customers to see prices as lower is called odd-even pricing.
This is a pricing strategy where retailers and suppliers put an odd number such as 9 at the end of a price.
The reason for this is a belief that when people see a price ending with 9, they believe the good is cheaper because it isn't rounded up and so they buy the good.
Find out more on odd-even pricing at https://brainly.com/question/6853542.
