Shopping vocabulary

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Across
  1. 3. items at lower prices for a few days or weeks
  2. 6. if you type this you get a product for a smaler price
  3. 7. they give you money off in a shop
  4. 8. it tells you how much something costs
  5. 9. a piece of paper that you get when you pay for something
Down
  1. 1. one example of it is
  2. 2. get your money back
  3. 4. when you pay less than the usual price
  4. 5. one example of it is "buy one get one free"