The strategic power that maps grant make it so PCs are unable to purchase maps, if you desire a map of the region, city, country, or the like, you will most likely have to scout out the terrain yourself, and then map it out. This will require the use of two skills, Knowledge (Geography) and Craft (Maps) or Profession (Cartographer).
The region map will be hidden from PCs, I will reveal parts of it through exploration and the use of proper map makings.
mini maps will be granted to those making maps by the use of Hexographer, so that I may quickly map out a region based upon how well you did making the map.
A high ranking soldier in the military will have a map of the region, so gaining rank in the military will grant one access to a regions map, or you could steal the map, but that’d require you to steal from a nations military.