All4Cellular via eBay offers this 4-Piece Car / Wall Charging Bundle for iPhone and iPod in 11 colors (Black pictured) for $3.30 with free shipping. It includes a USB wall charger adapter, USB car charger, and two charge & sync USB data cables. Deal ends today.

Note that it's not compatible with iPhone 5. See the "Compatibility" list on the product page for a full list of compatible Apple device models.