if you're hospital bill was only $140, you recieved no antivenin. Actually, I can practically guarentee you that you didn't, and if you indeed did, I want to know what hospital is giving you crofab for $140! A vial of Crofab usually runs around the $700 range...typically, AV isn't given for copperhead bites, but since you didn't mention the seriousness of the bite, I assumed some could have been administered. In all actuality, they probably didn't do much. Did insurance cover any part of the bill? Was the $140 only what was left over after insurance took care of it? If that was the total amount, I would suspect they did little for you but make sure you were stable.
AP