I believe it is $120 per person but AP discounts apply if you have one. I sent an e-mail asking several questions about the tour, below are the Q's with responses:
Does the tour start at 7 pm and run through 12 am? Yes and after the tour you are free to stay in the park until 2:00am.
Are all Haunted Houses and shows included? Yes, and if there is time left you will also get to see a couple of regular park attractions as well.
Is there a meal break? There is not enough time for a full meal break, but the guide will stop for a snack if you ask!
The person assisting me also indicated that the VIP tours were booking up fast, especially for peak days. Hope this helps.
jb