A newer model Nikon D6 was released in February 2020.
Best price for Nikon D5 is $9,999.00 inclusive of GST. This is presently the cheapest offer in Australia.
The amount of detail that the camera can capture is called the resolution, and is measured in mega pixels (MP). The more mega pixels a camera has, the more details it can capture and the larger pictures can be without becoming blurry.