If you know the problem, it is easier to find someone that can do it for you cuz tools and time are factors otherwise you would have done it yourself. Plus with knowledge, the mechanic can not screw with you. If I want this piece to be replace, do that. Don't be doing this and saying this other parts need replacement too so shall I add more to the bill?
Had to replace my shocks. Guy said he gets better pricing with his business to business account. I said go ahead. Bill shows $350 x 2 since there are two shocks to my car. I looked online, a brand new one only cost $350 a pair. I was double charged and it is how they do their business to survive. They lost me as a customer.
Dumb business owner tries to pull a fast one. Honest and integrity will keep a relationship strong for an overall continuous business transaction.