As one of its daily deals, Groupon offers the iLuv Epicarp Slim Folio Cover for Apple iPad in four colors (Green pictured) for $15 with free shipping. That's the lowest total price we could find by at least $7. It's designed to fit the iPad 2, 3rd-generation iPad, and the 4th-generation iPad with Retina display. It features a magnetic closure that automatically powers off your iPad to conserve battery power. Deal ends today.