I am trying to purchase a new 2015 Honda Pilot. I...

I am trying to purchase a new 2015 Honda Pilot. I did my homework if you will and know about the car. The price is good, but the way a sales person presented me with 4 Wheel-Locks and MudGuards for $595 as a preliminary invoice is a totally rip-off. I know they are trying to make every dollar they could from any customer who walks in.
No matter what you do, you as a consumer, you will be paying more than what any sales person would say. I understand this is his/her livelihood; however, when you try to deceive you in your face, I just don't know what you would call it. We as potential customers of any dealership, you make a call wisely. It is your hard-earned money!