There's a warehouse type wine/spirit/beer store + distributor about 20 miles outside of DC called Corridor (If you live in Laurel, it' right before the BW Parkway on 198).
http://www.wineaccess.com/store/corridorwine/index.html
The place is easily about 20,000 sq ft and they they have a ridiculous selection of alcohol and cigars. If they don't have it - they can special order it for you.
Since they also function as a distributor, when you start buying things by the case/box load they knock the price down into the sub-retail level (Cigars too - they'll instantly take 10% off if you buy a box).
You don't get as good a pricing as say a Bar for tax reasons, but you pay much less than full retail.
I was there 2 weeks ago looking at this for Labor Day (maybe). They told me if I buy a case, they'll take 12% off the price.
I looked back at the sales agent and


I'm already jumping out the window just thinking about buying ONE bottle of Rothschild.
Oh and NO(!) they don't carry Ace of Spades. When you ask them, they immediately know you don't know shit and almost laugh in your face.
But if you do want it - they will order it for you - after telling you you're a bit of a fool for buying repackaged mid-grade champagne that goes for 75-100 Euro a bottle in France.
But if you want to pay $350+ retail, they're more than happy to charge you that.