A mom tells her son to buy some vegetables
She says to bargain, and try to offer the seller half the price

Son: Sir, how much does a bag of vegetable cost?

Seller: 8

Son: I will offer you 4

Seller: What about 6

Son: 3

Seller: Alright, I will sell it for 4

Son: 2

Seller: 3

Son: 1.50

Seller: Kid, you are bargaining too much, I might as well give you a bag for free.

Son: Give me 2 bags