Jgood, do some research on that Wolfs Head trans fluid and make sure that it meets the Esso specs. $15.00 a liter for the Esso is cheap. Local BMW dealer charges $42.00 per liter. Audi charges 22.00 per liter for the exact same thing.
I do have a question. How did the mechanic check the fluid? Theres no dipstick, so did he take off the fill plug and then refill it with the old fluid?