You have the power to do this. Anybody can edit the wiki. I'd do it myself but I usually only work on the wiki while I'm at work and don't have access to the game. If you can provide me with a full list of NPCs, their functions, and their prices, I'd be more than happy to help out with this. Unfortunately without that information there isn't much for me to do because I don't use the Chocobo Circuit often enough to have that stuff memorized and there's nothing on the internet that I can reference when my memory doesn't serve me. I am currently working on the beastmaster page.
Ah ok. See I didn't know I was able to do anything lol. I can provide some comprehensive info this week about the circuit so that new people know what to do.