Exigious did the numbers on this in his stream:
Fuel costs 40,000 per ton of tritium, so to fill the 1000T tank costs 40,000,000 (if you buy the tritium rather than mine it). If you fill the 25,000 cargo hold with fuel then it will cost you 1,000,000,000 credits to fill the carrier with tritium, which will get you 52 jumps or 26,000 lys worth of traveling. Lets say it takes you 52 days of real life time to do those jumps, one jump per night.
Now, each jump seems to incur a "wear & tear" cost of 1,000,000 on the carrier and you pay this as you go, it seems to be added to the upkeep.
A fully outfitted carrier (total costs) is 7.6 billion for the carrier itself plus all services. It also costs 44,000,000 per week in upkeep for all of those services.
Thus, jumping your carrier 26,000 lys into deep space over the span of 52 days should cost you about a total of 9,004,000,000 credits.
And then it will cost you a continuous 44 million per week just to keep that carrier out their sitting in deep space.
Hopefully the numbers get adjusted BIG TIME.