About how much would it cost me a month for this car?

i am sick and tired of my car, there is always something wrong with it. i recently rode with one of my buddys and he has an 05 scion tc, i loved it. so i got online and searched for some and found one for like 13,988 or something like that. about how much would it cost me a month for the car, i go to college and work at target so i dont have much lol