Not that I know of.
As a general rule though, you can avoid buying skills from any of the main towns, as they almost always have quests associated with those skills. The harder to reach non primary towns usually have skills that aren't available via quest.
Personally (after going through the game once and not knowing any better), I'm only going to use quest skills until I end the game with my other characters, and after everything is explored... then fill in the holes with buying skills. I think pve is easy enough that you can get buy with just the skills you pick up on the way.
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