There's a GameCrazy in Gaitherburg (near Rio). I know thats not Rockville, but its a heck of a lot closer than Frederick.
I have never stopped but I hear its good.
After finally finding someone to give my money to I picked up AW and FF12 today. The computer actually got the price right for once too. AW rang up for 23.99 and FF12 for 31.99. They didn't have any Assassin's in yet thou.
And I was ready to argue and everything.
If I remember correctly, the Dualshock 3 will start off being sold separately but once they can keep up with demand it will replace the current controller that comes with the PS3.
As for when to buy it I would say wait a bit if you can. What people have been saying about deals being few and...