Thanks for the support! I knew it sounded silly to carry x99 PDs on multiple characters. Good to know there's another alternative besides Photon Spheres.
I'm going to wait for time to pass before considering auctioning it, along with a planned "want" list. Who knows, I might even like using...
I'm thinking about auctioning this in the future.
I also have a noob question about trading large sums of PDs. Do players seriously carry around x99 PDs with different characters/accounts or is there an alternative to photon spheres I don't know about?