It depends on the job really, I can't compare to domestics as don't do any.
I have some commercial work that's day to day work that's not the best priced but I have others work that's priced a lot higher commercial is a lot more competitive IMO
One of jobs are by far the highest paying
I know a few lads that do really well on domestics tho, even on terraced house at £5 fronts, some of these lads are running 100 plus houses a day on 2 weekly rotas so nothing at all to turn your nose up at.