Meritline offers the Clear Screen Protector for iPhone 3GS 3-Piece 5-Pack (15 screen protectors total) for $2.99. (Choose the 5-pack under "Buy More Save More".) With free shipping, that's the lowest total price we've seen for this quantity of iPhone 3GS screen protectors. Each pack includes three reusable screen protectors, lint-free cleaning cloth, and squeegee card.