Hiro is from the future and money is important, okay? Even with a (likely) improved economy, it's foremost in his mind. "Does this place use money? Is it space money? Do I have to go back and kill that space pig and barter with it's tusks?"

Oh weird, okay, Hiro can do this. Roommates! Living spaces! Sharing a place with someone who isn't Tadashi!

...just kidding, maybe he can't do this, because that thought is somehow ten times worse on another planet. So, after a moment, he tucks back in on himself, shrugging. "I don't know. I'm allergic to peanuts? And, uh...that's it? I'm pretty low-maintenance, I guess."