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)
We actually just moved to Bellevue.. from VA.. so the website was very helpful!!
Thanks for the info too.. it was helpful
Oh how funny that the Exeter info is even more helpful than I thought it would be. Welcome to the Seattle area! Feel free to PM me if you have any other questions.