DDHvi wrote:This is a good key point. Even with relatively inexpensive interstellar travel, it is not likely the costs/person would be anywhere as low as sea or air travel is today. Recall how small the crew is on those giant freighters.
It appear to me that David visualizes the cost of travel akin or less than what you had with ocean liners in the first half of the 20th century. Not modern air travel, though travel in-system is on that kind of scale.
So you can travel cheaply with minimal amenities, or in style for a pile of cash, and some range between them.