I've kind of been watching this discussion/argument. I'd say when it comes to fish of any kind there are different qualities involved and each fish should be appraised on their own characteristics. Size, quality, age, color, eating habits.
I'd say put both fish out on the table and have at it.
I've sold fish and have run fish stores in the past. Fish are only worth what someone is willing to pay. I've seen fish sell for 100 and 1000 for the same thing. It just depends on what the buyer wants and if they feel they are getting value in the transaction.
I'd love to see pictures of this eel. It could be worth alot.
Joe