Hidden charges - Electric man

I agreed to a price with the salesman that I would pay for the car. However when I got to the sales finance guy he had added in $150 hand buff fee. There was no mention anywhere me agreeing to pay this however I just wanted out of there so I didn’t want to argue with the people who just wanted to argue with people all day. Also, the car was listed as newly detailed it was gross. There was stuff dripping down the side of the console, They didn’t have all of the keys.... in my opinion if you’re going to sell cars you may want to get them ready to sell before you actually sell them. Very frustrating on the money I spent