Cost 1: 12.99
Cost 2: 10
$cost1 < $cost2: bool(false)
$cost1 == $cost2: bool(false)
$cost1 > $cost2: bool(true)

Title 1: The Great Escape
Title 2: The Great Gatsby
$title1 < $title2: bool(true)
$title1 == $title2: bool(false)
$title1 > $title2: bool(false)