I currently own myself, and have sold a bunch of townhouses in Norristown. There have been great comments already about the values.
In terms of advice, I would say be realistic about your price and you will get it sold quickly. A lot of people have flocked to the area because you can get new homes for reasonable prices. This is very appealing to many people. It also is a convenient location to get to almost anywhere in the area. We moved there because at the time my wife worked in Downingtown and I worked in SW Philly. Norristown provided a great home at a good price and convenient location.