No, it wasn't luck. Some of the D600s have had production issues, but I bought a refurbished D600 that had 217 shutter actuations and no dust or lubricant on the sensor. It's still very clean after a couple of thousand more images.
The D600 is an awesome camera. Very nice image, by the way.
"Red is gray and yellow white, but we decide which is right ....and which is an illusion"