angelic,
The definition of "detailing" varies from a thorough wash and vacuuming for $30-$50 to serious polishing/waxing, etc. that can cost up to $400-$500. I have my car done once or twice a year for around $250 and it is very much worth it. They polish out any small scratches and it feels like silk when you run your hands over it.
Here's the Web site of the place I go to. I know that won't help you in Va. but it explains what they do and gives you an idea of pricing. (I'm sure it costs less in smaller cities or more rural areas)
http://www.exeterauto.com/page2.htm