The “four hour sessions” are a deliverable. There is no mention of how many hours went into preparing for them.
I was once paid 3,500 for a single 15 minute talk. It took me about 5 days to read various technical materials and condense them into an executive summary that could be delivered in 15 minutes. There were about 100 people in the audience. They got excellent value for money and I got paid reasonably for my research.
I was once paid 3,500 for a single 15 minute talk. It took me about 5 days to read various technical materials and condense them into an executive summary that could be delivered in 15 minutes. There were about 100 people in the audience. They got excellent value for money and I got paid reasonably for my research.