It's Bargain!

123456
Across
  1. 2. a person who buys goods or a service
  2. 3. something that is made to sell
  3. 5. a thing bought for sale more cheaply than is usual
  4. 6. a group of people or things arranged in a row
Down
  1. 1. someone who is selling something
  2. 4. the money you get back when you have paid for something with more money than it costs