[gravitas]

Without having read anything but your comment:

What about the actual vs. perceived wear and tear on the ships(?) transporting the goods, do they experience 5 days worth of repair/upkeep (fuel?) needs, or 5 minutes? Maintaining the transport (vehicle, ransible, teleporter, whatever) has some sort of cost - TANSTAAFL.

[the_af]

The passage of time is the same for the transport and its crew, i.e. 5 minutes.

It's only the stationary observer (not travelling with the ship) who experiences 5 days.

[elil17]

Most of the paper assumes zero fuel and maintenance costs