Transparent pricing

How do PCOs decide on the rate they will charge a corporate client? Do they weigh up the delegate numbers, factor in the overheads and add a modest commission, or do they simply consult the tea leaves and charge whatever suits?

There have been grumbles lately about inconsistent pricing in the meetings industry. The lack of transparency in some quarters has already had repercussions, with some bigger organisations bringing in outside procurement agents.

Do you think PCOs need to be made more accountable? If not, why not, and if so, what would be the best way of regulating the industry?