Live Rock supplier in Maryland

Hi all. After many years of freshwater aquaria, I'm finally taking my first
plunge into marine. I'm looking for reasonably-priced, decent quality live
rock (preferably pre-cured) in Maryland. I'm willing to drive just about
anywhere within an hour or two from the Frederick area.

I went to the mother of all stores around here, The Aquarium Center in
Randallstown and I wasn't too particularly impressed with their selection of
live rock. It looked to me more like "dead rock" with not a living plant or
animal to be found anywhere on it.

Anyone in the area know another decent supplier?

Thanks in advance.