I live in Louisville, KY.  The closest ocean is about 650 miles from me.  But boy, I love fresh shrimp, clams, oysters, mussels, etc.  But unfortunately, its just so expensive.  My local supermarket is all the time running sales on steak, which I pick up for about $1.49 a pound.  Sure, its fun to have steak everyday, but the novelty wears off.  But my favorite food is seafood.  Shrimp (at its cheapest) is about $4.50 a pound, with the average price being around $6-$8.  Frozen mussels got for $4-$5 a pound.
So what would be the best way for me to get affordable seafood?