CellularFactory offers this iPod / iPhone Dock Connector Anti-Dust Plug in Black for 49 cents. With free shipping via coupon code "1IZLJN", that's 20 cents under our November mention for this plug in a different color and the lowest total price we've seen. This silicone insert protects your iPod or iPhone's dock connector port from dust and pocket lint. Deal ends January 19 at 1 pm ET.