That's what's great about Ghost Armor.
http://www.ghost-armor.com/
They have a kiosk at the mall... it's installed by people that know how to install screen protectors (not me) with no air bubbles.
$25 with lifetime warranty replacement... So, in about 6 months when I start seeing scuffs and stuff on the screen, I peel it off and go in there and say "hey, my film is starting to peel off."
$5 install fee for "warranty" replacement... used it on my S3 and my 5s... and now my 6+. Never gotten a scratch on my screen. Ever. The film is about as noticeable as a contact lens.