1byone via Amazon offers the 1byone Ultra-Clear HD Glass Screen Protector for Samsung Galaxy S6 for $7.99. Coupon code "YDYKNR32" cuts it to $2. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.10.) That's $5 off and the lowest total price we could find.