Just so you guys know, that yes, the feat fixer npc in Tortage (at the docks standing in front of the ladder at the tall stone tower) does fix your feats for free, even if you left tortage and came back. I don't know how long it will last, but it saved me 2 silver from using the npcs in Khemi.
However, be aware that if you do use the feat fixer all of your harvesting abilities will be stripped and you're character will be screwed in regards to harvesting (because you have to accept the quest to get the harvesting feats, and we haven't found a way to get the feats back once you feat-fix

). My guildmate had the GM try to fix it by auto completing the quest but now he can't do tier 2 stuff cause he still doesn't have the feat.
I would not be surprised if the same happens with crafting!
Also another minor issue with the feat fixer. It removes and readds all of your abilities, so you will lose your ability layout on your hotbar.