When dealing with freight rates & quotes, you soon realize that there are not 2 freight forwarders who quote the same way.
Some give ballpark prices, some list every costs to the detail, some include insurance by default, some others don't , etc.
The question is: for a professional importer, when it comes to building up a budget for an import, does it really matter if the US $7 consignment fee is or isn't included ? Importers are often dealing with import projects worth x*thousand dollars - so what they really need is a quick estimation, and not wait 3 days because the forwarder needs to confirm if the documents fee is $2 per BL or $3...
Response times, ability to quickly provide & update freight quotes - these should be the real challenges for freight forwarders, and not 100% accuracy; serious importers will never argue if the final bill is actually 1 or 2% more expensive than quoted - but they will argue if they loose a business because they were not able to quote fast enough.