Some GX1 kits are now officially discontinued. An example is the GX1 with normal 14-42mm lens that is not even sold by Amazon anymore (Click here to see) and marked as discontinued at BHphoto (Click here).
The GX1 with X kit lens sells for $489 at Amazon (Click here) which means that if you count away the price for the lens you pay $180 only for the GX1 body.
More Panasonic deals:
GF3 with 14-42mm lens for $349 at Amazon (Click here).
GF5 with 14-42mm lens for $399 at Amazon (Click here).
And the discounted G5 is the most sold mirrorless camera at Amazon (ranking here).