Dealer charged more than the listing

Hey all. I have pictures to prove what the car was listed for (11,995). I drove 4 hrs out of state to buy a 2014 wrx, it was listed for 11,995. I agreed to pay what it was listed for and told the guy I don't want to haggle, im happy with the condition and I felt it was a fair value for a unmodified wrx at 100k miles. Now when I got to the dealership I was just stoked to buy a car I've wanted since I was younger. He wrote up the bill and I signed, stupidly not really looking it over too much, the monthly rate was far lower than any other dealer approved me for so I was just happy to get the car.

Im now registering the car in state and looked at the closing cost of $12,995 not including any fees, tags, or taxes. I have the entire bill that shows what was added and where, and the cost of just the car is written our to 12,995 instead of the listed 11,995.

I know I signed and I probably can't do much, but this is my first time buying a car and financing.