Board Thread:Galaxy on Fire Questions and Answers/@comment-161.225.129.111-20130418172705/@comment-758892-20130419143755

Just what I thought, when I started with GoF2. My first playthrough was also just with the base game, and while I never came to regret this decision, I can tell you, that you also don't loose anything, if you use the add-ons from the start.

Concerning your original question however, I think that apart from Quineros there's no fixed purchase location for the Hiro and you have to trust to luck to stumble across it on some station or another.