The phrase is normally inaccurate. If you have to acquire 1 to have the future 1 for free, it wasn't essentially free. Identical with products you get for filling out a study. "For free of charge" is frequently far more exact in that it implies you will not have to https://docs.google.com/document/d/e/2PACX-1vR1aRmbt0UmT4gxVq4IXbfDVfh2KrMfGfIz30gs2kLcIKk8h4EVktV5g2U8cNCzOTBSOZHhUqlkGaRY/pub