Well I went into Flight Centre today and asked how much the 3 day parkhoppers were and she checked and said $188.00. I mentioned the ad in their magazine saying they were $179.00 (
Thanks Saylan!) and she checked again. She said it was still showing $188.00, but then found some for $176.00 - they are actually through Holiday House (tour operator/wholesaler) she said. So I got 2 of those and then she said they are actually "buy 3 days, get 2 free" passes! Unfortunately I can't stay that long this trip, so we'll just use the 3 days, but I thought it was a great deal

The agent was very helpful.