Complete the key words in these definitions.
1 A good is the same as cheap or a fair price.
2 A is an amount of money taken away from the price of something.
3 If a shop or a company has certain goods in it, means that the goods are available.
4 If a shop offers interest-free customers, don't have to pay extra if they pay over 12 months.
5 A is a small amount of money that customers pay at the beginning.
