Located just off a busy street in Vienna Virginia, located in a strip mall in the corner. It's a bit hidden, but it's worth the search.
The beer selection is expansive. They offer cases, six packs, and select singles. You can't break six packs, but they do offer a 10% discount on mixed packs of the singles they set out on the shelves. Unfortunately, the majority of the selection is unrefrigerated, but it seems like it's all well hidden from the light.
Generally the prices are on par with other stores, plus a discount for singles (includes the big bottles).
The staff is knowledgable and are happy to help. They are also very talkative when they are checking out your beers. I've also seen them on the phone talking to customers about what they have in stock.
For the Vienna area there isn't much of a better choice. This is a local store I'm happy to support.