There are two-bedroom condos on the metro in decent neighborhoods for under $200k. There are also 2 BR condos on the metro for over a million. So the truth is you can find something as cheap or as expensive as you like. Determine what you want from your home, i.e. your commute destination, amenities, neighborhood, then consult a local expert. You'll have no problem finding something in Northern Virginia.
you may also visit my website for new listing http://www.kaybal.com
Frank - http://www.franklyrealty.com/ and http://blog.franklyrealty.com/
Brian - http://www.brianblock.com/ and http://www.brianblock.com/market_news.shtml
Jay - http://www.justnewlistings.com/
Good luck and welcome to the area!