I had it done on a 4 acre pond two or three years ago for $450. That price did not include a management report, which as I understand it from Greg drives the cost up considerably due to the labor involved.
If you are just after fish removal and willing to do some or most of that yourself with the assistance of an electroshocker person, my guess is it would be pretty reasonable.
However, be advised that typical electroshocking only gets you 10 to 20% of the fish and generally only those in shallow water.
