To answer the question in German: It was $ 58 per person for a tour. The tour lasted a good 2 hours
It's $58 but there are coupons in the Welcome Center which saves you $5 per person (up to 6 persons).
$58 per person for the two hour option. Parking was $15 right across the street.
I think it's like $65
I was working there, dunno
Thanks! Your answer is awaiting moderation.