looks canny cheap aswell, ask him when the timing belt was last changed and was the balance belt changed aswell, smell the auto box fliud make sure it dont smell burnt, check the colour of the g/box oil should be a redish , or pinky, if black or very dark brown it will smell burnt and a sighn that the box is in trouble
check for oil leaks and condition of oil, also check the idle arm make sure it aint bent commen problem but for that price you cant complain