Jesse Coombs yes, by definition trait “grubbing” comes after the roll in Fate Core. It is cumulative, and frequently a bidding war for really important actions. The net outcome of the rule, in my experience, is that most actions result in exactly a success (not success with style, tie or failure), because the players pay exactly what is necessary to ensure that outcome, no more, no less.

I think a lot of the Fate threads I have read today have all ultimately boiled down to whether what I just said is a feature or a bug.