Thats quite cheap for a Panasonic 42" plasma. From the reviews I've seen, Panasonics are the best plasma panels to get as they have really good electronics.

Goggling that model number comes up with only a handful of sites, most of them being Russian.

Does anyone own this model? Has it been superseded?

The panel you are looking for is listed on this site avaction
For owners reviews, go to the plasma section of avforums.com in the UK It is the same panel with a slightly different model number. It is sold as a commercial panel in Aus.