According to this site, the price of live (and processed, if you go the
page) eel going through customs in Japan have doubled in the last two years:

According to the Monterey Bay Aquarium Seafood watch, eel is on the "avoid" list.
See
http://www.montereybayaquarium.org/cr/S ... px?fid=253Freshwater eel have a unique life cycle: the adults spawn in salt water thousands of miles from the freshwater habitat where their offspring will grow up. Loss of freshwater habitat for eel has caused serious decline in wild populations.
Ninety percent of all eel sold in the U.S. are farm raised. Rather than raising them from eggs, eel farms collect young eels from the wild, a practice that adds pressure to the already threatened wild populations. Eel progress through five stages as they grow, including the "glass eel" stage. These young glass eels are collected from the wild to be raised in farms.
The method of farming used to raise eel is another cause for concern. Open net pens allow waste products, disease and parasites from the farm to flow directly into the surrounding environment – impacting the habitat and the wild eel that live there. In addition, eel need to be fed other fish, depleting wild populations. During their lives, farmed eel will eat twice their weight in wild-caught fish.