I can’t help you with rate info,but I would like to say that I had an excellent mohel who when he came to check the baby on the second or third day,and my husband asked him how much he needed to pay him (because my husband actually didn’t ask him beforehand, being we were very hectic,as you can imagine…)he responded very clearly that my husband owed him nothing and he would never,ever sell his mitzvah! We were floored! My husband who has an answer for everything was speechless!
And, he does this with everyone,not just us! We asked!