Today only, All4Cellular offers the Zagg ZAGGSkins Valentine's Day Skins with InvisibleSHIELD for Apple iPhone in three styles for free plus $2 for shipping. That's tied with last month's mention (which offered Christmas skins) as the lowest total price we could find by $21. It's available for the iPhone 4S, 4, 3GS, and 3G, although not all iPhone/style options are available.