Yeah, because money is a social construct that doesn't exist in a free society! And, uh, because I'm pretty sure there's no money in the Dream Sphere. I mean, most of these Dreamer costumes don't even have functional pockets. How are you supposed to carry cash?

[Ango is a novelist by trade, so he's put way too much energy into critiquing the worldbuilding of the Dream Sphere.]

So yeah, everything's free. I'm just spreading the holiday cheer.