Fair service!

However, increasing commission rates alone would negatively affect the vast majority of customers for whom the existing commission structure sets prices at a fair level. The higher rates we are announcing today mean we can fairly price the service we provide to consistently successful customers.

This is from an answer to their FAQ's  -  the first sentence suggests that those other than 'the vast majority' are not getting a fair service
The second sentence suggests there are 2 services !!

If you do not incur data/transaction charges but fall into the 'consistently successful customers'  - you are being discriminated against, even though you pay them over £50K just to be their customer

Their 'associates' must fall into this trap - I wonder if they are immune?