I did a sim prep with Graham from
www.emeraldcoastinterviewconsulting.com in MIA. Its $950 for 2 hours and you can split it with another person for $475 each with an hour each flying.
I felt it was excellent prep and he seems like a knowledgable, honest instructor. From what I understand, it costs a little less at other places, but I wouldn't hesitate recommending this guy.