How works when one of my players has Focus 4 (-200) or 5 (-250) on a signature skill and want to purchase a new talent, the first one of the tree (200px) or one a step away (200px too). They are free? They are free and they gain 50px if they have Focus 5? :-P
Skill Focus Credits
Focus training with a skill represents a deep, specialised understanding of that skill. Such intense dedication makes it easier for a character to fully explore all the nuances of the skill. The cost to acquire talents is reduced by 50 for each level of focus training a character has.
For example, Mitch Hunter has Willpower Focus 1. Acquiring talents from the Willpower talent tree cost 50 fewer experience points for Mitch Hunter.