Unfortunately, without a screen protector, the only way to remove scratches on your device’s screen is to fully replace the touchscreen for a minimum for $100.
I think that they cost a little more than 100 dollars and more likely around 400~500 dollars including labor. But again... I see me paying may be 20 dollars for such product but 60 dollars? 100 dollars? Come on PPCTech.... you should review these prices one more time.