As always, posting this for first timers. This is a prime example of why it's better to farm weapons, instead of buying it: Because you can't buy Intergalactic gear. It's the highest quality skell gear you can get and I just got a bunch of 'em. Also, you can only buy the regular G-Buster. If you want the G2-Buster (which is far superior), you'll have to farm it from Pugiliths, or Cetos.