This is as cheap as it gets! The 45-200mm lens from Panasonic sells for $99 at Bestbuy (Click here).
Meantime the GH3 is in Stock at Samys and Adorama (with free shipping and 2% rewards) . But Adorama has also a few superkits options. The GF3 X kit sells as low as $329 on eBay US (Click here).The GF5 with X lens for $374 on eBay US (Click here) and the GX1 X for $499 again at on eBay US (Click here).