The Copart vehicles that are easy fixes, a few panels bumper bar etc, are usually bid too high for many vehicle repairers or body shops, because the amateurs push up the prices way too high.
I used to do this as a sidelines and even 30 years ago it was getting very difficult to buy a salvage vehicle which was profitable.
Its good to have a look and do your research.
But you would have to be extremely lucky to get a decent car at a good price.
Sometimes luck favours the bold, but more likely to get your fingers burned.