As I stated in a previous post, I believe this should be a consequence
of Traveller technology. But according to canonical price lists and
wages, it isn't. Despite the advanced technology allowing automation
and nearly free energy, basic material goods are still just as
expensive as on today's Earth, or in some cases even more so.
Most of Traveller economics modeling suffers from the Guess-estimate process. In that prices and costs were set arbitrarily. At best said numbers chosen to facilitate game play. I have found that ship prices and the Trade rules are overpriced by about a order of magnitude.
Honestly the specific numbers often get in the way of how things like trade routes are laid out. In that the amount money involved in in trade is less important than the sizes of the populations involved in trade. Also consider that Tech Level more defines what sorts of products a world is trading rather than quantity just as Star Port class defines the sorts of trade the world is engaged in through the form of what sorts of ships can call at that port.
Now when we get to Energy, the question isn't the Amount of available energy, more the question is do you have the social infrastructure to support the benefits that the abundance of energy provide? The case of the Tomato, energy isn't the limiting factor there, for production, but the skill of the farmer and processor of the fruit control the cost.
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Evyn