I go in for tire repair and the man asks about my windshield wipers....?

I have a work car that I take to the dealership for oil changes. They would ALWAYS come out with a "dirty" engine and cabin filter. They wanted something like $120 to replace both so I reject. Then the next time I replaced both (with the company card) for about $45 before taking it in just to see if they would show them to me. They didn't.