Screen protectors ought to protect your device from daily wear and tear. After searching, I've found the one. Illumishield S6 screen protector fits the bill without the hefty price. It's currently $6.95 including shipping and handling, got 3 packs and lifetime replacement warranty. Glass like quality and very convenient application.
Amazon.com iLLumiShield - Samsung Galaxy S6 Screen Protector with Lifetime Replacement Warranty - Japanese Ultra Clear HD Film with Anti-Bubble and Anti-Fingerprint - High Quality Invisible LCD Shield - 3-Pack OEM Retail Packaging Cell Phones Accessories
Amazon.com iLLumiShield - Samsung Galaxy S6 Screen Protector with Lifetime Replacement Warranty - Japanese Ultra Clear HD Film with Anti-Bubble and Anti-Fingerprint - High Quality Invisible LCD Shield - 3-Pack OEM Retail Packaging Cell Phones Accessories