Hi ed
If you have many negs it might be worth getting a film scanner and you can then see the JPgs to see if any good......some guys use a digi camera to copy negs.
If you bought a S\H film scanner you can always resell it after using it.
At first you don't have to be an expert using a film scanner as it doesn't matter if say the colours are wrong or covered in dust spots or dirt smudges etc, but it will show you if the negs are winners or losers and you can go from there.