Zakix Direct via Amazon offers Prime members the Zakix Tempered Glass Screen Protector for iPhone 6 for $9.99. Coupon code "QJ5RWFVR" cuts it to $4.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to bag free shipping; otherwise it adds $6.01.) That's the lowest total price we could find by $9. It features 9H hardness and an oleophobic coating.