T'was the Night Before Rent-Mas

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Across
  1. 3. Where customers like to do their pushups
  2. 5. What is demanded after a customer doesn't know how to use a product
  3. 6. _______ item
  4. 8. "You doing OK bud?"
Down
  1. 1. What customers rent when their life is out of "balance"
  2. 2. Most commonly forgotten accessory
  3. 4. What verification requires when someone is sketchy
  4. 7. Does this do 4K?