Amazon has this Panasonic Lumix 45-175mm f/4-5.6 OIS Zoom Micro 4/3 Lens for $319, but you can get it for $199 when you click on the Gold Box Deal link. It features a nano surface coating, multi-actuator floating inner focus, Power O.I.S. and powered zoom. Unique Photo
has the same item for $319.95. Shipping is free.