One of the other posts in the feed makes it sound like they only do it a handful of times a year, and that cost is covering a multi-day excursion since they have to wait for conditions to be right. Still, no excuse to not have contingencies, but I think their take gets eaten into a fair bit more than the raw math would suggest.
So, in the live feed the BBC has going, there's a post suggesting that a group of explorers were apparently on board based on one of them's Facebook feed, so it's safe to say they probably had the full passenger set on there.
