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there's plenty. I've been using some cheap $.99 for a 3 pack I got on ebay some time ago. works like it should, nothing special.
 
I wonder if its worth getting one then?
worth a shot. I used to buy the $15-$20 for a 2 pack of power support and stopped after my iPhone 4. Since then I either didn't have a screen protector or bought cheap ones. really didn't see a difference. if I got a scratch, I left it until I wanted to change it out. easy options of going from anti-glare to clear screen protectors. I use them on my wifes iP5s too. of course she see's no difference.
 
I like minimal and hate bulk. a co-worker has those glass screen protectors and I don't like it. there's those who rave on the high end screen protectors. to each their own though. it won't hurt to try out the cheap ones. only spending $.99, nothing to it.
 
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