Unfortunately that would penalise the wheel builder and not Hope, which would feel a bit unfair
I think this is partly on the wheel builder, especially as later you say he noticed that everything is different from his first batch.
Why didn’t he just pick up the phone and check with you? Couldn’t be bothered or thought you wouldn’t notice?!
It wouldn’t cost him any money to fix, just time, unless he can’t send the hubs back now he’s built them and potentially marked the spoke holes.
Personally I wouldn’t feel too sorry for him, presumably he has also made some profit on the parts not just the labour charge.