@LuckyBlackCat Well for the most part, you could definitely buy them at one of the department stores. On the flip side, it would stand to Pokemon logic that a few of them might be hidden throughout the region.
That reminds me,
@dabombjk and I were talking about screwing with RPGmaker and adapting some stuff from this RP into a game. I actually still have all the Pokemon resources from a project a long while back, so while it wouldn't exactly be a fast process we could probably start cobbling something together once we get far enough into the RP.