My mistake on clarification. Corrected in post up.
VIP could take only 32 cargo units (with adequately modified price), while other passengers would take only 16. The change is to counter the absurd nonsense in which freighter can easily take up 500 people, while it would barely have place for 20.
The prices and income technically would be the same in bulk, following the scheme "it takes 16 times more cargo, it costs 16 times more.