if all they do is manage bets, then they are lazy, changing cpc should ideally only be to maintain position preference, then that they should focus increases the quality score, so as soon as you score from 7 you will pay what Google considers to be the right cost per click for this keyword, everything below 7 carries a penalty, for example, a quality score of 1 will cost about 600% more per click than the same keyword if he worked at 7 points, if he was at 10, then about It would be 30% less than 7, so improving your Quality Score is much more important than just managing cost per click.
By simply managing cpc, like distributing asprin to a brain tumor, it can alleviate pain and treat symptoms, but the damage is still being done behind the scenes and requires various actions to cure it.
if an agency or consultant talks more about bid management than about splitting your accounts into targeted ad groups and improving your quality rating, then find someone else to tell your ppc management.
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