This is a direct path to the Spree's October calendar. See the 27th/28th
http://www.spreeexpeditions.com/spree_07_sch_oct.asp
The tabs at the top of the site have a fair amount of information. Price is $550 and that gets you 7 dives if all goes well. (At least that is how I'm reading it, I've never been there either).