The official rule on costs for unusual backgrounds is quite an unhelpful ‘Variable’, with a couple of examples of 10- and 50-point costs. I have decided to standardise the basis of the cost of the advantage so that my players can get an idea of how much they need to spend for the background, as well as the abilities that they gain from it. There are four bands of cost, depending on how exotic (translation: useful in the game) the skills are, and the actual cost depends on how good you want to be at the skills.