Through the Classic storyline missions, you receive gear rewards for Story mission completion that is named for the planet you are on. If you have sold some of these items off (and it is too late for the Buy Back option), is it possible to re-acquire this gear somehow? Or is it a “you’re outta luck” situation? Edited June 27, 2022 by JohnnyJP

You are, indeed, SOL if you want *exactly* the piece you sold. Sorry. Some of those sets may have alternative sets that look similar and that can be acquired by other means, but there's no guarantee.