The costs of ship components and ships are in Ship Points. They don't have a rarity designation.
So, if the PCs want to replace component A with component B, are there rules in the books to cover this? I haven't seen them, but may have missed them.
During creation, the players can turn one unspent Ship Point into one Profit Factor. I'm assuming they can reverse the process later, to get Profit Factor back in order to buy new components or even a new ship.
And what if they end up with a spare component they want to trade in? I'm thinking a 50% loss on the item, tracked in Ship Points, but I just made that up.
And if they get a second ship, any rules for moving components from one ship to another?
Thanks!