B&H Photo Video offers the Panasonic Lumix 45-175mm f/4.0-5.6 Telephoto Micro Zoom OIS Lens in Silver, model no. H-PS45175S, for $289.95 with free shipping. (Amazon offers it at the same price.) That's the lowest total price we could find by $37. It works with multiple Panasonic Lumix Micro Four Thirds DSLR-like cameras, comes with a metal mount, and features two aspherical lenses, two ED lenses, nano surface coating technology, power optical image stabilization, and more.