DaDeacs
Dickie Hemric
I would check out the seafood joints down at Washington/9th at the end of the italian market, they get a ton of stuff, usually pretty fresh - I have never bought blue crabs from them, but the prices are all pretty solid, I used to buy branzino for $6/pound all the time, bought a couple of lobsters a few months back, forgot how much, but it was decent.