Why ten thousand credits? No profound reason. It is a common amount of Retirement Pay. It shows up in a few places in TTB as a cost of things (see below). Looking at the Mustering Out Tables, 10,000 is not hard to come by. But it can go again quickly if a PC is not careful. I also figured this would be useful to Referees in determining how much to pay the Travellers for their current job. Don't be a cheapskate, but don't Monty Haul them either.
In terms of Long-term Subsistence, 10,000 Credits will pay for almost an entire year, at the High Living level, to give you a sense of scale. But remember this game was written in the 1970’s when a decent starter house might only cost $10-20,000. Oh, how times have changed.
|Is it really an adventure if there's no treasure involved?|
I combed through the Traveller Book and my blog for any reference to paying for things. Here's what I found: 10,000 Credits will buy a Traveller: