It's a crapshoot out here. VA is out as they are state regulated, but at least you know what they have and what the price will be. MD depends on what county you're in as to whether is government run or private. DC is the wild west. Being downtown means there's plenty of stores, but what each has and what they charge varies wildly. The Costco in DC sells liquor, but their selection isn't always great, and when they do have something nice, you have to be ON IT before it sells out.