They listed a car at 21k on their website and when...

They listed a car at 21k on their website and when I called, they gave me a quotation that added 4k worth of dealer's fee items and told me all dealers in Arizona do this. I would like to ask the "all dealers in Arizona" how do you feel about this? From the reviews below, it seems like I'm not the only person who experienced this. Just be careful.