to me its way wrong for a son to charge for helpin his parents.i would not pay a dime.you have done your share of payin all his life. id be mighty upset if i were you.it just aint rite. my dad is gone now.we were close his whole life.worked together too.id give anything to be able to help him again on anything in any way..r.i.p.dad.i miss you old man.