A few adjectives to describe a product

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Across
  1. 2. using new methods or ideas
  2. 3. impossible to break
  3. 4. very unusual or special
  4. 5. very modern
  5. 8. suitable for your needs
  6. 9. helping you to do something
  7. 12. The worth of something compared to the price paid or asked for it
  8. 13. of a high standard
  9. 14. suitable for your needs
  10. 15. simple for people to use
  11. 18. existing for a long period of time
  12. 19. which doesn't damage the environment
Down
  1. 1. that you can throw away after use
  2. 2. not costing a lot of money
  3. 6. used many times before and proved to be successful
  4. 7. able to be recycled
  5. 10. the most expensive in a group of similar products
  6. 11. complex and refined
  7. 15. unable to be defeated or improved because of excellent quality
  8. 16. that can be trusted
  9. 17. very comfortable and expensive