Since these numbers are my fault, let me share some logic:
#1 issue: Basic at 4 per stateroom this option better than carrying High passenger by far and completely unrelated to carrying passengers in the hold at 2 per ton.
#2 issue: There is no 2 passenger per stateroom choice, even though there are double occupancy and barracks rules all based around 2 tons per crew. Either make a 2 ton class and a 1 ton class for both or leave it at 2 tons.
#3 more of a reminder: when I did some math, Matthew wanted me not ignore (as I’m guessing many of us do) the 1 ton for the high cargo allowance, which eats into hold capability.
So, these prices use ‘model’ 400 ton ships (assumed TL12 – for J1 to J3, only standard components, a 2:1 freight/passenger mix on remaining space and some other assumptions and fudges, TL13 just for J4, but increasing to 600tons for J-5 an TL15 J6 1000 tons – because that’s where things get economical – overhead for bridge and crew and stuff makes carrying much else impossible)
My design goal was to make a full load of High (including steward and cargo expenses) always marginally better than a load of Middle which would be always marginally better than full load of Basic. Also, Basic should not be better than freight.
Finally, give an increasing profit margin to higher jump vessels, because these will be rarer. Then, use round(ish) numbers and keep increases for all classes generally in line as Jump numbers increase.
I plugged the resulting numbers back to A1 and A2 traders and a subsidized liner. At full load, with each passenger class, the ships stay profitable. Obviously mixes and lower passenger/freight loads make for ‘issues’ but that’s where the adventuring part factors in. Otherwise, it’s a freight and passenger moving spreadsheet game…