I just picked up a fire eel from Sea World in Salem, NH today. I had them pick out the most colorful, biggest, fattest one. Mine was about 14" and $39.99. They had about 6 left in the tank, but I guess they're going really fast.
They've also got two big black pacus that they had for $15 each, but they're going to mark them down to both for $10 by early next week, and they said if no one picks them up by the end of next week, they'll be $1 each. I guess someone brought them in but no one ever buys pacus that size and they're really looking to fill the tank with something else.